21738685220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{449}}^1\times {\mathrm{1999}}^1$

素因数の和:2637

約数の個数: 96

約数和(自身を含む): 52617600000

約数和(自身を除く): 30878914780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 449, 692, 865, 898, 1211, 1730, 1796, 1999, 2245, 2422, 3143, 3460, 3998, 4490, 4844, 6055, 6286, 7996, 8980, 9995, 12110, 12572, 13993, 15715, 19990, 24220, 27986, 31430, 39980, 55972, 62860, 69965, 77677, 139930, 155354, 279860, 310708, 345827, 388385, 543739, 691654, 776770, 897551, 1087478, 1383308, 1553540, 1729135, 1795102, 2174956, 2420789, 2718695, 3458270, 3590204, 4487755, 4841578, 5437390, 6282857, 6916540, 8975510, 9683156, 10874780, 12103945, 12565714, 17951020, 24207890, 25131428, 31414285, 48415780, 62828570, 125657140, 155276323, 310552646, 621105292, 776381615, 1086934261, 1552763230, 2173868522, 3105526460, 4347737044, 5434671305, 10869342610, 21738685220]

約数ペア:

[(1, 21738685220), (2, 10869342610), (4, 5434671305), (5, 4347737044), (7, 3105526460), (10, 2173868522), (14, 1552763230), (20, 1086934261), (28, 776381615), (35, 621105292), (70, 310552646), (140, 155276323), (173, 125657140), (346, 62828570), (449, 48415780), (692, 31414285), (865, 25131428), (898, 24207890), (1211, 17951020), (1730, 12565714), (1796, 12103945), (1999, 10874780), (2245, 9683156), (2422, 8975510), (3143, 6916540), (3460, 6282857), (3998, 5437390), (4490, 4841578), (4844, 4487755), (6055, 3590204), (6286, 3458270), (7996, 2718695), (8980, 2420789), (9995, 2174956), (12110, 1795102), (12572, 1729135), (13993, 1553540), (15715, 1383308), (19990, 1087478), (24220, 897551), (27986, 776770), (31430, 691654), (39980, 543739), (55972, 388385), (62860, 345827), (69965, 310708), (77677, 279860), (139930, 155354)]