20216890

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 37313280

約数和(自身を除く): 17096390

約数列:

[1, 2, 5, 10, 79, 157, 158, 163, 314, 326, 395, 785, 790, 815, 1570, 1630, 12403, 12877, 24806, 25591, 25754, 51182, 62015, 64385, 124030, 127955, 128770, 255910, 2021689, 4043378, 10108445, 20216890]

約数ペア:

[(1, 20216890), (2, 10108445), (5, 4043378), (10, 2021689), (79, 255910), (157, 128770), (158, 127955), (163, 124030), (314, 64385), (326, 62015), (395, 51182), (785, 25754), (790, 25591), (815, 24806), (1570, 12877), (1630, 12403)]