21512836

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{1061}}^1$

素因数の和:1239

約数の個数: 24

約数和(自身を含む): 38983896

約数和(自身を除く): 17471060

約数列:

[1, 2, 4, 37, 74, 137, 148, 274, 548, 1061, 2122, 4244, 5069, 10138, 20276, 39257, 78514, 145357, 157028, 290714, 581428, 5378209, 10756418, 21512836]

約数ペア:

[(1, 21512836), (2, 10756418), (4, 5378209), (37, 581428), (74, 290714), (137, 157028), (148, 145357), (274, 78514), (548, 39257), (1061, 20276), (2122, 10138), (4244, 5069)]