81639425

素因数分解:

$5^2\times 7^1\times {\mathrm{449}}^1\times {\mathrm{1039}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 116064000

約数和(自身を除く): 34424575

約数列:

[1, 5, 7, 25, 35, 175, 449, 1039, 2245, 3143, 5195, 7273, 11225, 15715, 25975, 36365, 78575, 181825, 466511, 2332555, 3265577, 11662775, 16327885, 81639425]

約数ペア:

[(1, 81639425), (5, 16327885), (7, 11662775), (25, 3265577), (35, 2332555), (175, 466511), (449, 181825), (1039, 78575), (2245, 36365), (3143, 25975), (5195, 15715), (7273, 11225)]