81927080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{571}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 196447680

約数和(自身を除く): 114520600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 211, 340, 422, 571, 680, 844, 1055, 1142, 1688, 2110, 2284, 2855, 3587, 4220, 4568, 5710, 7174, 8440, 9707, 11420, 14348, 17935, 19414, 22840, 28696, 35870, 38828, 48535, 71740, 77656, 97070, 120481, 143480, 194140, 240962, 388280, 481924, 602405, 963848, 1204810, 2048177, 2409620, 4096354, 4819240, 8192708, 10240885, 16385416, 20481770, 40963540, 81927080]

約数ペア:

[(1, 81927080), (2, 40963540), (4, 20481770), (5, 16385416), (8, 10240885), (10, 8192708), (17, 4819240), (20, 4096354), (34, 2409620), (40, 2048177), (68, 1204810), (85, 963848), (136, 602405), (170, 481924), (211, 388280), (340, 240962), (422, 194140), (571, 143480), (680, 120481), (844, 97070), (1055, 77656), (1142, 71740), (1688, 48535), (2110, 38828), (2284, 35870), (2855, 28696), (3587, 22840), (4220, 19414), (4568, 17935), (5710, 14348), (7174, 11420), (8440, 9707)]