19803420

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:82

約数の個数: 288

約数和(自身を含む): 78704640

約数和(自身を除く): 58901220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 31, 35, 36, 39, 42, 45, 52, 54, 60, 62, 63, 65, 70, 78, 84, 90, 91, 93, 105, 108, 117, 124, 126, 130, 135, 140, 155, 156, 169, 180, 182, 186, 189, 195, 210, 217, 234, 252, 260, 270, 273, 279, 310, 315, 338, 351, 364, 372, 378, 390, 403, 420, 434, 455, 465, 468, 507, 540, 546, 558, 585, 620, 630, 651, 676, 702, 756, 780, 806, 819, 837, 845, 868, 910, 930, 945, 1014, 1085, 1092, 1116, 1170, 1183, 1209, 1260, 1302, 1365, 1395, 1404, 1521, 1612, 1638, 1674, 1690, 1755, 1820, 1860, 1890, 1953, 2015, 2028, 2170, 2340, 2366, 2418, 2457, 2535, 2604, 2730, 2790, 2821, 3042, 3255, 3276, 3348, 3380, 3510, 3549, 3627, 3780, 3906, 4030, 4095, 4185, 4340, 4563, 4732, 4836, 4914, 5070, 5239, 5460, 5580, 5642, 5859, 5915, 6045, 6084, 6510, 7020, 7098, 7254, 7605, 7812, 8060, 8190, 8370, 8463, 9126, 9765, 9828, 10140, 10478, 10647, 10881, 11284, 11718, 11830, 12090, 12285, 13020, 14105, 14196, 14508, 15210, 15717, 16380, 16740, 16926, 17745, 18135, 18252, 19530, 20956, 21294, 21762, 22815, 23436, 23660, 24180, 24570, 25389, 26195, 28210, 29295, 30420, 31434, 31941, 33852, 35490, 36270, 36673, 39060, 42315, 42588, 43524, 45630, 47151, 49140, 50778, 52390, 53235, 54405, 56420, 58590, 62868, 63882, 70980, 72540, 73346, 76167, 78585, 84630, 91260, 94302, 101556, 104780, 106470, 108810, 110019, 117180, 126945, 127764, 141453, 146692, 152334, 157170, 159705, 169260, 183365, 188604, 212940, 217620, 220038, 235755, 253890, 282906, 304668, 314340, 319410, 330057, 366730, 380835, 440076, 471510, 507780, 550095, 565812, 638820, 660114, 707265, 733460, 761670, 943020, 990171, 1100190, 1320228, 1414530, 1523340, 1650285, 1980342, 2200380, 2829060, 3300570, 3960684, 4950855, 6601140, 9901710, 19803420]

約数ペア:

[(1, 19803420), (2, 9901710), (3, 6601140), (4, 4950855), (5, 3960684), (6, 3300570), (7, 2829060), (9, 2200380), (10, 1980342), (12, 1650285), (13, 1523340), (14, 1414530), (15, 1320228), (18, 1100190), (20, 990171), (21, 943020), (26, 761670), (27, 733460), (28, 707265), (30, 660114), (31, 638820), (35, 565812), (36, 550095), (39, 507780), (42, 471510), (45, 440076), (52, 380835), (54, 366730), (60, 330057), (62, 319410), (63, 314340), (65, 304668), (70, 282906), (78, 253890), (84, 235755), (90, 220038), (91, 217620), (93, 212940), (105, 188604), (108, 183365), (117, 169260), (124, 159705), (126, 157170), (130, 152334), (135, 146692), (140, 141453), (155, 127764), (156, 126945), (169, 117180), (180, 110019), (182, 108810), (186, 106470), (189, 104780), (195, 101556), (210, 94302), (217, 91260), (234, 84630), (252, 78585), (260, 76167), (270, 73346), (273, 72540), (279, 70980), (310, 63882), (315, 62868), (338, 58590), (351, 56420), (364, 54405), (372, 53235), (378, 52390), (390, 50778), (403, 49140), (420, 47151), (434, 45630), (455, 43524), (465, 42588), (468, 42315), (507, 39060), (540, 36673), (546, 36270), (558, 35490), (585, 33852), (620, 31941), (630, 31434), (651, 30420), (676, 29295), (702, 28210), (756, 26195), (780, 25389), (806, 24570), (819, 24180), (837, 23660), (845, 23436), (868, 22815), (910, 21762), (930, 21294), (945, 20956), (1014, 19530), (1085, 18252), (1092, 18135), (1116, 17745), (1170, 16926), (1183, 16740), (1209, 16380), (1260, 15717), (1302, 15210), (1365, 14508), (1395, 14196), (1404, 14105), (1521, 13020), (1612, 12285), (1638, 12090), (1674, 11830), (1690, 11718), (1755, 11284), (1820, 10881), (1860, 10647), (1890, 10478), (1953, 10140), (2015, 9828), (2028, 9765), (2170, 9126), (2340, 8463), (2366, 8370), (2418, 8190), (2457, 8060), (2535, 7812), (2604, 7605), (2730, 7254), (2790, 7098), (2821, 7020), (3042, 6510), (3255, 6084), (3276, 6045), (3348, 5915), (3380, 5859), (3510, 5642), (3549, 5580), (3627, 5460), (3780, 5239), (3906, 5070), (4030, 4914), (4095, 4836), (4185, 4732), (4340, 4563)]