20528380

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4259}}^1$

素因数の和:4509

約数の個数: 24

約数和(自身を含む): 43298640

約数和(自身を除く): 22770260

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4259, 4820, 8518, 17036, 21295, 42590, 85180, 1026419, 2052838, 4105676, 5132095, 10264190, 20528380]

約数ペア:

[(1, 20528380), (2, 10264190), (4, 5132095), (5, 4105676), (10, 2052838), (20, 1026419), (241, 85180), (482, 42590), (964, 21295), (1205, 17036), (2410, 8518), (4259, 4820)]