20845960

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9833}}^1$

素因数の和:9897

約数の個数: 32

約数和(自身を含む): 47793240

約数和(自身を除く): 26947280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9833, 19666, 39332, 49165, 78664, 98330, 196660, 393320, 521149, 1042298, 2084596, 2605745, 4169192, 5211490, 10422980, 20845960]

約数ペア:

[(1, 20845960), (2, 10422980), (4, 5211490), (5, 4169192), (8, 2605745), (10, 2084596), (20, 1042298), (40, 521149), (53, 393320), (106, 196660), (212, 98330), (265, 78664), (424, 49165), (530, 39332), (1060, 19666), (2120, 9833)]