13260220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 28986048

約数和(自身を除く): 15725828

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 103, 157, 164, 205, 206, 314, 410, 412, 515, 628, 785, 820, 1030, 1570, 2060, 3140, 4223, 6437, 8446, 12874, 16171, 16892, 21115, 25748, 32185, 32342, 42230, 64370, 64684, 80855, 84460, 128740, 161710, 323420, 663011, 1326022, 2652044, 3315055, 6630110, 13260220]

約数ペア:

[(1, 13260220), (2, 6630110), (4, 3315055), (5, 2652044), (10, 1326022), (20, 663011), (41, 323420), (82, 161710), (103, 128740), (157, 84460), (164, 80855), (205, 64684), (206, 64370), (314, 42230), (410, 32342), (412, 32185), (515, 25748), (628, 21115), (785, 16892), (820, 16171), (1030, 12874), (1570, 8446), (2060, 6437), (3140, 4223)]