99779780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{739}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 216068160

約数和(自身を除く): 116288380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 157, 172, 215, 314, 430, 628, 739, 785, 860, 1478, 1570, 2956, 3140, 3695, 6751, 7390, 13502, 14780, 27004, 31777, 33755, 63554, 67510, 116023, 127108, 135020, 158885, 232046, 317770, 464092, 580115, 635540, 1160230, 2320460, 4988989, 9977978, 19955956, 24944945, 49889890, 99779780]

約数ペア:

[(1, 99779780), (2, 49889890), (4, 24944945), (5, 19955956), (10, 9977978), (20, 4988989), (43, 2320460), (86, 1160230), (157, 635540), (172, 580115), (215, 464092), (314, 317770), (430, 232046), (628, 158885), (739, 135020), (785, 127108), (860, 116023), (1478, 67510), (1570, 63554), (2956, 33755), (3140, 31777), (3695, 27004), (6751, 14780), (7390, 13502)]