488997980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{5471}}^1$

素因数の和:5630

約数の個数: 48

約数和(自身を含む): 1061786880

約数和(自身を除く): 572788900

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 820, 1090, 2180, 4469, 5471, 8938, 10942, 17876, 21884, 22345, 27355, 44690, 54710, 89380, 109420, 224311, 448622, 596339, 897244, 1121555, 1192678, 2243110, 2385356, 2981695, 4486220, 5963390, 11926780, 24449899, 48899798, 97799596, 122249495, 244498990, 488997980]

約数ペア:

[(1, 488997980), (2, 244498990), (4, 122249495), (5, 97799596), (10, 48899798), (20, 24449899), (41, 11926780), (82, 5963390), (109, 4486220), (164, 2981695), (205, 2385356), (218, 2243110), (410, 1192678), (436, 1121555), (545, 897244), (820, 596339), (1090, 448622), (2180, 224311), (4469, 109420), (5471, 89380), (8938, 54710), (10942, 44690), (17876, 27355), (21884, 22345)]