18681620

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6269}}^1$

素因数の和:6427

約数の個数: 24

約数和(自身を含む): 39501000

約数和(自身を除く): 20819380

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6269, 12538, 25076, 31345, 62690, 125380, 934081, 1868162, 3736324, 4670405, 9340810, 18681620]

約数ペア:

[(1, 18681620), (2, 9340810), (4, 4670405), (5, 3736324), (10, 1868162), (20, 934081), (149, 125380), (298, 62690), (596, 31345), (745, 25076), (1490, 12538), (2980, 6269)]