21898490

素因数分解:

$2^1\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{1609}}^1$

素因数の和:2977

約数の個数: 16

約数和(自身を含む): 39470760

約数和(自身を除く): 17572270

約数列:

[1, 2, 5, 10, 1361, 1609, 2722, 3218, 6805, 8045, 13610, 16090, 2189849, 4379698, 10949245, 21898490]

約数ペア:

[(1, 21898490), (2, 10949245), (5, 4379698), (10, 2189849), (1361, 16090), (1609, 13610), (2722, 8045), (3218, 6805)]