20435680

素因数分解:

$2^5\times 5^1\times {\mathrm{337}}^1\times {\mathrm{379}}^1$

素因数の和:731

約数の個数: 48

約数和(自身を含む): 48550320

約数和(自身を除く): 28114640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 337, 379, 674, 758, 1348, 1516, 1685, 1895, 2696, 3032, 3370, 3790, 5392, 6064, 6740, 7580, 10784, 12128, 13480, 15160, 26960, 30320, 53920, 60640, 127723, 255446, 510892, 638615, 1021784, 1277230, 2043568, 2554460, 4087136, 5108920, 10217840, 20435680]

約数ペア:

[(1, 20435680), (2, 10217840), (4, 5108920), (5, 4087136), (8, 2554460), (10, 2043568), (16, 1277230), (20, 1021784), (32, 638615), (40, 510892), (80, 255446), (160, 127723), (337, 60640), (379, 53920), (674, 30320), (758, 26960), (1348, 15160), (1516, 13480), (1685, 12128), (1895, 10784), (2696, 7580), (3032, 6740), (3370, 6064), (3790, 5392)]