18820840

素因数分解:

$2^3\times 5^1\times {\mathrm{470521}}^1$

素因数の和:470532

約数の個数: 16

約数和(自身を含む): 42346980

約数和(自身を除く): 23526140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 470521, 941042, 1882084, 2352605, 3764168, 4705210, 9410420, 18820840]

約数ペア:

[(1, 18820840), (2, 9410420), (4, 4705210), (5, 3764168), (8, 2352605), (10, 1882084), (20, 941042), (40, 470521)]