20540510

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{2539}}^1$

素因数の和:3355

約数の個数: 16

約数和(自身を含む): 37033200

約数和(自身を除く): 16492690

約数列:

[1, 2, 5, 10, 809, 1618, 2539, 4045, 5078, 8090, 12695, 25390, 2054051, 4108102, 10270255, 20540510]

約数ペア:

[(1, 20540510), (2, 10270255), (5, 4108102), (10, 2054051), (809, 25390), (1618, 12695), (2539, 8090), (4045, 5078)]