19218020

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6449}}^1$

素因数の和:6607

約数の個数: 24

約数和(自身を含む): 40635000

約数和(自身を除く): 21416980

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6449, 12898, 25796, 32245, 64490, 128980, 960901, 1921802, 3843604, 4804505, 9609010, 19218020]

約数ペア:

[(1, 19218020), (2, 9609010), (4, 4804505), (5, 3843604), (10, 1921802), (20, 960901), (149, 128980), (298, 64490), (596, 32245), (745, 25796), (1490, 12898), (2980, 6449)]