20123892100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1\times {\mathrm{829}}^1$

素因数の和:1190

約数の個数: 144

約数和(自身を含む): 47929432320

約数和(自身を除く): 27805540220

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 263, 284, 325, 355, 526, 650, 710, 829, 923, 1052, 1300, 1315, 1420, 1658, 1775, 1846, 2630, 3316, 3419, 3550, 3692, 4145, 4615, 5260, 6575, 6838, 7100, 8290, 9230, 10777, 13150, 13676, 16580, 17095, 18460, 18673, 20725, 21554, 23075, 26300, 34190, 37346, 41450, 43108, 46150, 53885, 58859, 68380, 74692, 82900, 85475, 92300, 93365, 107770, 117718, 170950, 186730, 215540, 218027, 235436, 242749, 269425, 294295, 341900, 373460, 436054, 466825, 485498, 538850, 588590, 765167, 872108, 933650, 970996, 1077700, 1090135, 1177180, 1213745, 1471475, 1530334, 1867300, 2180270, 2427490, 2834351, 2942950, 3060668, 3825835, 4360540, 4854980, 5450675, 5668702, 5885900, 6068725, 7651670, 10901350, 11337404, 12137450, 14171755, 15303340, 15479917, 19129175, 21802700, 24274900, 28343510, 30959834, 38258350, 56687020, 61919668, 70858775, 76516700, 77399585, 141717550, 154799170, 201238921, 283435100, 309598340, 386997925, 402477842, 773995850, 804955684, 1006194605, 1547991700, 2012389210, 4024778420, 5030973025, 10061946050, 20123892100]

約数ペア:

[(1, 20123892100), (2, 10061946050), (4, 5030973025), (5, 4024778420), (10, 2012389210), (13, 1547991700), (20, 1006194605), (25, 804955684), (26, 773995850), (50, 402477842), (52, 386997925), (65, 309598340), (71, 283435100), (100, 201238921), (130, 154799170), (142, 141717550), (260, 77399585), (263, 76516700), (284, 70858775), (325, 61919668), (355, 56687020), (526, 38258350), (650, 30959834), (710, 28343510), (829, 24274900), (923, 21802700), (1052, 19129175), (1300, 15479917), (1315, 15303340), (1420, 14171755), (1658, 12137450), (1775, 11337404), (1846, 10901350), (2630, 7651670), (3316, 6068725), (3419, 5885900), (3550, 5668702), (3692, 5450675), (4145, 4854980), (4615, 4360540), (5260, 3825835), (6575, 3060668), (6838, 2942950), (7100, 2834351), (8290, 2427490), (9230, 2180270), (10777, 1867300), (13150, 1530334), (13676, 1471475), (16580, 1213745), (17095, 1177180), (18460, 1090135), (18673, 1077700), (20725, 970996), (21554, 933650), (23075, 872108), (26300, 765167), (34190, 588590), (37346, 538850), (41450, 485498), (43108, 466825), (46150, 436054), (53885, 373460), (58859, 341900), (68380, 294295), (74692, 269425), (82900, 242749), (85475, 235436), (92300, 218027), (93365, 215540), (107770, 186730), (117718, 170950)]