205315240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{394837}}^1$

素因数の和:394861

約数の個数: 32

約数和(自身を含む): 497495880

約数和(自身を除く): 292180640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 394837, 789674, 1579348, 1974185, 3158696, 3948370, 5132881, 7896740, 10265762, 15793480, 20531524, 25664405, 41063048, 51328810, 102657620, 205315240]

約数ペア:

[(1, 205315240), (2, 102657620), (4, 51328810), (5, 41063048), (8, 25664405), (10, 20531524), (13, 15793480), (20, 10265762), (26, 7896740), (40, 5132881), (52, 3948370), (65, 3158696), (104, 1974185), (130, 1579348), (260, 789674), (520, 394837)]