20516810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{307}}^1$

素因数の和:518

約数の個数: 32

約数和(自身を含む): 38187072

約数和(自身を除く): 17670262

約数列:

[1, 2, 5, 10, 41, 82, 163, 205, 307, 326, 410, 614, 815, 1535, 1630, 3070, 6683, 12587, 13366, 25174, 33415, 50041, 62935, 66830, 100082, 125870, 250205, 500410, 2051681, 4103362, 10258405, 20516810]

約数ペア:

[(1, 20516810), (2, 10258405), (5, 4103362), (10, 2051681), (41, 500410), (82, 250205), (163, 125870), (205, 100082), (307, 66830), (326, 62935), (410, 50041), (614, 33415), (815, 25174), (1535, 13366), (1630, 12587), (3070, 6683)]