28308040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{421}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 65439540

約数和(自身を除く): 37131500

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 421, 820, 842, 1640, 1681, 1684, 2105, 3362, 3368, 4210, 6724, 8405, 8420, 13448, 16810, 16840, 17261, 33620, 34522, 67240, 69044, 86305, 138088, 172610, 345220, 690440, 707701, 1415402, 2830804, 3538505, 5661608, 7077010, 14154020, 28308040]

約数ペア:

[(1, 28308040), (2, 14154020), (4, 7077010), (5, 5661608), (8, 3538505), (10, 2830804), (20, 1415402), (40, 707701), (41, 690440), (82, 345220), (164, 172610), (205, 138088), (328, 86305), (410, 69044), (421, 67240), (820, 34522), (842, 33620), (1640, 17261), (1681, 16840), (1684, 16810), (2105, 13448), (3362, 8420), (3368, 8405), (4210, 6724)]