20491600

素因数分解:

$2^4\times 5^2\times {\mathrm{51229}}^1$

素因数の和:51247

約数の個数: 30

約数和(自身を含む): 49232030

約数和(自身を除く): 28740430

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51229, 102458, 204916, 256145, 409832, 512290, 819664, 1024580, 1280725, 2049160, 2561450, 4098320, 5122900, 10245800, 20491600]

約数ペア:

[(1, 20491600), (2, 10245800), (4, 5122900), (5, 4098320), (8, 2561450), (10, 2049160), (16, 1280725), (20, 1024580), (25, 819664), (40, 512290), (50, 409832), (80, 256145), (100, 204916), (200, 102458), (400, 51229)]