28725880

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{2131}}^1$

素因数の和:2479

約数の個数: 32

約数和(自身を含む): 64855440

約数和(自身を除く): 36129560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1685, 2131, 2696, 3370, 4262, 6740, 8524, 10655, 13480, 17048, 21310, 42620, 85240, 718147, 1436294, 2872588, 3590735, 5745176, 7181470, 14362940, 28725880]

約数ペア:

[(1, 28725880), (2, 14362940), (4, 7181470), (5, 5745176), (8, 3590735), (10, 2872588), (20, 1436294), (40, 718147), (337, 85240), (674, 42620), (1348, 21310), (1685, 17048), (2131, 13480), (2696, 10655), (3370, 8524), (4262, 6740)]