18486680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12491}}^1$

素因数の和:12539

約数の個数: 32

約数和(自身を含む): 42722640

約数和(自身を除く): 24235960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12491, 24982, 49964, 62455, 99928, 124910, 249820, 462167, 499640, 924334, 1848668, 2310835, 3697336, 4621670, 9243340, 18486680]

約数ペア:

[(1, 18486680), (2, 9243340), (4, 4621670), (5, 3697336), (8, 2310835), (10, 1848668), (20, 924334), (37, 499640), (40, 462167), (74, 249820), (148, 124910), (185, 99928), (296, 62455), (370, 49964), (740, 24982), (1480, 12491)]