81553520

素因数分解:

$2^4\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1663}}^1$

素因数の和:2289

約数の個数: 40

約数和(自身を含む): 190035456

約数和(自身を除く): 108481936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 613, 1226, 1663, 2452, 3065, 3326, 4904, 6130, 6652, 8315, 9808, 12260, 13304, 16630, 24520, 26608, 33260, 49040, 66520, 133040, 1019419, 2038838, 4077676, 5097095, 8155352, 10194190, 16310704, 20388380, 40776760, 81553520]

約数ペア:

[(1, 81553520), (2, 40776760), (4, 20388380), (5, 16310704), (8, 10194190), (10, 8155352), (16, 5097095), (20, 4077676), (40, 2038838), (80, 1019419), (613, 133040), (1226, 66520), (1663, 49040), (2452, 33260), (3065, 26608), (3326, 24520), (4904, 16630), (6130, 13304), (6652, 12260), (8315, 9808)]