81358820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{1291}}^1$

素因数の和:1460

約数の個数: 48

約数和(自身を含む): 179722368

約数和(自身を除く): 98363548

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 137, 230, 274, 460, 548, 685, 1291, 1370, 2582, 2740, 3151, 5164, 6302, 6455, 12604, 12910, 15755, 25820, 29693, 31510, 59386, 63020, 118772, 148465, 176867, 296930, 353734, 593860, 707468, 884335, 1768670, 3537340, 4067941, 8135882, 16271764, 20339705, 40679410, 81358820]

約数ペア:

[(1, 81358820), (2, 40679410), (4, 20339705), (5, 16271764), (10, 8135882), (20, 4067941), (23, 3537340), (46, 1768670), (92, 884335), (115, 707468), (137, 593860), (230, 353734), (274, 296930), (460, 176867), (548, 148465), (685, 118772), (1291, 63020), (1370, 59386), (2582, 31510), (2740, 29693), (3151, 25820), (5164, 15755), (6302, 12910), (6455, 12604)]