81968720

素因数分解:

$2^4\times 5^1\times {\mathrm{1024609}}^1$

素因数の和:1024622

約数の個数: 20

約数和(自身を含む): 190577460

約数和(自身を除く): 108608740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1024609, 2049218, 4098436, 5123045, 8196872, 10246090, 16393744, 20492180, 40984360, 81968720]

約数ペア:

[(1, 81968720), (2, 40984360), (4, 20492180), (5, 16393744), (8, 10246090), (10, 8196872), (16, 5123045), (20, 4098436), (40, 2049218), (80, 1024609)]