85317820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{12437}}^1$

素因数の和:12467

約数の個数: 48

約数和(自身を含む): 208958400

約数和(自身を除く): 123640580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 12437, 24874, 49748, 62185, 87059, 124370, 174118, 248740, 348236, 435295, 609413, 870590, 1218826, 1741180, 2437652, 3047065, 4265891, 6094130, 8531782, 12188260, 17063564, 21329455, 42658910, 85317820]

約数ペア:

[(1, 85317820), (2, 42658910), (4, 21329455), (5, 17063564), (7, 12188260), (10, 8531782), (14, 6094130), (20, 4265891), (28, 3047065), (35, 2437652), (49, 1741180), (70, 1218826), (98, 870590), (140, 609413), (196, 435295), (245, 348236), (343, 248740), (490, 174118), (686, 124370), (980, 87059), (1372, 62185), (1715, 49748), (3430, 24874), (6860, 12437)]