172471640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3881}}^1$

素因数の和:4004

約数の個数: 64

約数和(自身を含む): 427641120

約数和(自身を除く): 255169480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 2020, 2222, 3881, 4040, 4444, 5555, 7762, 8888, 11110, 15524, 19405, 22220, 31048, 38810, 42691, 44440, 77620, 85382, 155240, 170764, 213455, 341528, 391981, 426910, 783962, 853820, 1567924, 1707640, 1959905, 3135848, 3919810, 4311791, 7839620, 8623582, 15679240, 17247164, 21558955, 34494328, 43117910, 86235820, 172471640]

約数ペア:

[(1, 172471640), (2, 86235820), (4, 43117910), (5, 34494328), (8, 21558955), (10, 17247164), (11, 15679240), (20, 8623582), (22, 7839620), (40, 4311791), (44, 3919810), (55, 3135848), (88, 1959905), (101, 1707640), (110, 1567924), (202, 853820), (220, 783962), (404, 426910), (440, 391981), (505, 341528), (808, 213455), (1010, 170764), (1111, 155240), (2020, 85382), (2222, 77620), (3881, 44440), (4040, 42691), (4444, 38810), (5555, 31048), (7762, 22220), (8888, 19405), (11110, 15524)]