90686680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1987}}^1$

素因数の和:2168

約数の個数: 64

約数和(自身を含む): 234743040

約数和(自身を除く): 144056360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 1987, 2282, 3260, 3974, 4564, 5705, 6520, 7948, 9128, 9935, 11410, 13909, 15896, 19870, 22820, 27818, 39740, 45640, 55636, 69545, 79480, 111272, 139090, 278180, 323881, 556360, 647762, 1295524, 1619405, 2267167, 2591048, 3238810, 4534334, 6477620, 9068668, 11335835, 12955240, 18137336, 22671670, 45343340, 90686680]

約数ペア:

[(1, 90686680), (2, 45343340), (4, 22671670), (5, 18137336), (7, 12955240), (8, 11335835), (10, 9068668), (14, 6477620), (20, 4534334), (28, 3238810), (35, 2591048), (40, 2267167), (56, 1619405), (70, 1295524), (140, 647762), (163, 556360), (280, 323881), (326, 278180), (652, 139090), (815, 111272), (1141, 79480), (1304, 69545), (1630, 55636), (1987, 45640), (2282, 39740), (3260, 27818), (3974, 22820), (4564, 19870), (5705, 15896), (6520, 13909), (7948, 11410), (9128, 9935)]