20486180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:94

約数の個数: 144

約数和(自身を含む): 55339200

約数和(自身を除く): 34853020

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 29, 38, 44, 52, 55, 58, 65, 76, 95, 110, 116, 130, 143, 145, 169, 190, 209, 220, 247, 260, 286, 290, 319, 338, 377, 380, 418, 494, 551, 572, 580, 638, 676, 715, 754, 836, 845, 988, 1045, 1102, 1235, 1276, 1430, 1508, 1595, 1690, 1859, 1885, 2090, 2204, 2470, 2717, 2755, 2860, 3190, 3211, 3380, 3718, 3770, 4147, 4180, 4901, 4940, 5434, 5510, 6061, 6380, 6422, 7163, 7436, 7540, 8294, 9295, 9802, 10868, 11020, 12122, 12844, 13585, 14326, 16055, 16588, 18590, 19604, 20735, 24244, 24505, 27170, 28652, 30305, 32110, 35321, 35815, 37180, 41470, 49010, 53911, 54340, 60610, 64220, 70642, 71630, 78793, 82940, 93119, 98020, 107822, 121220, 141284, 143260, 157586, 176605, 186238, 215644, 269555, 315172, 353210, 372476, 393965, 465595, 539110, 706420, 787930, 931190, 1024309, 1078220, 1575860, 1862380, 2048618, 4097236, 5121545, 10243090, 20486180]

約数ペア:

[(1, 20486180), (2, 10243090), (4, 5121545), (5, 4097236), (10, 2048618), (11, 1862380), (13, 1575860), (19, 1078220), (20, 1024309), (22, 931190), (26, 787930), (29, 706420), (38, 539110), (44, 465595), (52, 393965), (55, 372476), (58, 353210), (65, 315172), (76, 269555), (95, 215644), (110, 186238), (116, 176605), (130, 157586), (143, 143260), (145, 141284), (169, 121220), (190, 107822), (209, 98020), (220, 93119), (247, 82940), (260, 78793), (286, 71630), (290, 70642), (319, 64220), (338, 60610), (377, 54340), (380, 53911), (418, 49010), (494, 41470), (551, 37180), (572, 35815), (580, 35321), (638, 32110), (676, 30305), (715, 28652), (754, 27170), (836, 24505), (845, 24244), (988, 20735), (1045, 19604), (1102, 18590), (1235, 16588), (1276, 16055), (1430, 14326), (1508, 13585), (1595, 12844), (1690, 12122), (1859, 11020), (1885, 10868), (2090, 9802), (2204, 9295), (2470, 8294), (2717, 7540), (2755, 7436), (2860, 7163), (3190, 6422), (3211, 6380), (3380, 6061), (3718, 5510), (3770, 5434), (4147, 4940), (4180, 4901)]