257586420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:255

約数の個数: 288

約数和(自身を含む): 944455680

約数和(自身を除く): 686869260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 19, 20, 21, 26, 28, 30, 35, 38, 39, 42, 52, 57, 60, 65, 70, 76, 78, 84, 91, 95, 105, 114, 130, 133, 140, 156, 169, 182, 190, 191, 195, 210, 228, 247, 260, 266, 273, 285, 338, 364, 380, 382, 390, 399, 420, 455, 494, 507, 532, 546, 570, 573, 665, 676, 741, 764, 780, 798, 845, 910, 955, 988, 1014, 1092, 1140, 1146, 1183, 1235, 1330, 1337, 1365, 1482, 1596, 1690, 1729, 1820, 1910, 1995, 2028, 2292, 2366, 2470, 2483, 2535, 2660, 2674, 2730, 2865, 2964, 3211, 3380, 3458, 3549, 3629, 3705, 3820, 3990, 4011, 4732, 4940, 4966, 5070, 5187, 5348, 5460, 5730, 5915, 6422, 6685, 6916, 7098, 7258, 7410, 7449, 7980, 8022, 8645, 9633, 9932, 10140, 10374, 10887, 11460, 11830, 12415, 12844, 13370, 14196, 14516, 14820, 14898, 16044, 16055, 17290, 17381, 17745, 18145, 19266, 20055, 20748, 21774, 22477, 23660, 24830, 25403, 25935, 26740, 29796, 32110, 32279, 34580, 34762, 35490, 36290, 37245, 38532, 40110, 43548, 44954, 47177, 48165, 49660, 50806, 51870, 52143, 54435, 64220, 64558, 67431, 69524, 70980, 72580, 74490, 76209, 80220, 86905, 89908, 94354, 96330, 96837, 101612, 103740, 104286, 108870, 112385, 127015, 129116, 134862, 141531, 148980, 152418, 161395, 173810, 188708, 192660, 193674, 208572, 217740, 224770, 225953, 235885, 254030, 260715, 269724, 283062, 304836, 322790, 330239, 337155, 347620, 381045, 387348, 449540, 451906, 471770, 484185, 508060, 521430, 566124, 613301, 645580, 660478, 674310, 677859, 707655, 762090, 903812, 943540, 968370, 990717, 1042860, 1129765, 1226602, 1320956, 1348620, 1355718, 1415310, 1524180, 1651195, 1839903, 1936740, 1981434, 2259530, 2453204, 2711436, 2830620, 3066505, 3302390, 3389295, 3679806, 3962868, 4293107, 4519060, 4953585, 6133010, 6604780, 6778590, 7359612, 8586214, 9199515, 9907170, 12266020, 12879321, 13557180, 17172428, 18399030, 19814340, 21465535, 25758642, 36798060, 42931070, 51517284, 64396605, 85862140, 128793210, 257586420]

約数ペア:

[(1, 257586420), (2, 128793210), (3, 85862140), (4, 64396605), (5, 51517284), (6, 42931070), (7, 36798060), (10, 25758642), (12, 21465535), (13, 19814340), (14, 18399030), (15, 17172428), (19, 13557180), (20, 12879321), (21, 12266020), (26, 9907170), (28, 9199515), (30, 8586214), (35, 7359612), (38, 6778590), (39, 6604780), (42, 6133010), (52, 4953585), (57, 4519060), (60, 4293107), (65, 3962868), (70, 3679806), (76, 3389295), (78, 3302390), (84, 3066505), (91, 2830620), (95, 2711436), (105, 2453204), (114, 2259530), (130, 1981434), (133, 1936740), (140, 1839903), (156, 1651195), (169, 1524180), (182, 1415310), (190, 1355718), (191, 1348620), (195, 1320956), (210, 1226602), (228, 1129765), (247, 1042860), (260, 990717), (266, 968370), (273, 943540), (285, 903812), (338, 762090), (364, 707655), (380, 677859), (382, 674310), (390, 660478), (399, 645580), (420, 613301), (455, 566124), (494, 521430), (507, 508060), (532, 484185), (546, 471770), (570, 451906), (573, 449540), (665, 387348), (676, 381045), (741, 347620), (764, 337155), (780, 330239), (798, 322790), (845, 304836), (910, 283062), (955, 269724), (988, 260715), (1014, 254030), (1092, 235885), (1140, 225953), (1146, 224770), (1183, 217740), (1235, 208572), (1330, 193674), (1337, 192660), (1365, 188708), (1482, 173810), (1596, 161395), (1690, 152418), (1729, 148980), (1820, 141531), (1910, 134862), (1995, 129116), (2028, 127015), (2292, 112385), (2366, 108870), (2470, 104286), (2483, 103740), (2535, 101612), (2660, 96837), (2674, 96330), (2730, 94354), (2865, 89908), (2964, 86905), (3211, 80220), (3380, 76209), (3458, 74490), (3549, 72580), (3629, 70980), (3705, 69524), (3820, 67431), (3990, 64558), (4011, 64220), (4732, 54435), (4940, 52143), (4966, 51870), (5070, 50806), (5187, 49660), (5348, 48165), (5460, 47177), (5730, 44954), (5915, 43548), (6422, 40110), (6685, 38532), (6916, 37245), (7098, 36290), (7258, 35490), (7410, 34762), (7449, 34580), (7980, 32279), (8022, 32110), (8645, 29796), (9633, 26740), (9932, 25935), (10140, 25403), (10374, 24830), (10887, 23660), (11460, 22477), (11830, 21774), (12415, 20748), (12844, 20055), (13370, 19266), (14196, 18145), (14516, 17745), (14820, 17381), (14898, 17290), (16044, 16055)]