20970650

素因数分解:

$2^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2129}}^1$

素因数の和:2338

約数の個数: 24

約数和(自身を含む): 39221820

約数和(自身を除く): 18251170

約数列:

[1, 2, 5, 10, 25, 50, 197, 394, 985, 1970, 2129, 4258, 4925, 9850, 10645, 21290, 53225, 106450, 419413, 838826, 2097065, 4194130, 10485325, 20970650]

約数ペア:

[(1, 20970650), (2, 10485325), (5, 4194130), (10, 2097065), (25, 838826), (50, 419413), (197, 106450), (394, 53225), (985, 21290), (1970, 10645), (2129, 9850), (4258, 4925)]