21213470

素因数分解:

$2^1\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{1889}}^1$

素因数の和:3019

約数の個数: 16

約数和(自身を含む): 38238480

約数和(自身を除く): 17025010

約数列:

[1, 2, 5, 10, 1123, 1889, 2246, 3778, 5615, 9445, 11230, 18890, 2121347, 4242694, 10606735, 21213470]

約数ペア:

[(1, 21213470), (2, 10606735), (5, 4242694), (10, 2121347), (1123, 18890), (1889, 11230), (2246, 9445), (3778, 5615)]