19057820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13421}}^1$

素因数の和:13501

約数の個数: 24

約数和(自身を含む): 40588128

約数和(自身を除く): 21530308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13421, 26842, 53684, 67105, 134210, 268420, 952891, 1905782, 3811564, 4764455, 9528910, 19057820]

約数ペア:

[(1, 19057820), (2, 9528910), (4, 4764455), (5, 3811564), (10, 1905782), (20, 952891), (71, 268420), (142, 134210), (284, 67105), (355, 53684), (710, 26842), (1420, 13421)]