20505200

素因数分解:

$2^4\times 5^2\times {\mathrm{51263}}^1$

素因数の和:51281

約数の個数: 30

約数和(自身を含む): 49264704

約数和(自身を除く): 28759504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51263, 102526, 205052, 256315, 410104, 512630, 820208, 1025260, 1281575, 2050520, 2563150, 4101040, 5126300, 10252600, 20505200]

約数ペア:

[(1, 20505200), (2, 10252600), (4, 5126300), (5, 4101040), (8, 2563150), (10, 2050520), (16, 1281575), (20, 1025260), (25, 820208), (40, 512630), (50, 410104), (80, 256315), (100, 205052), (200, 102526), (400, 51263)]