21264355

素因数分解:

$5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1979}}^1$

素因数の和:2298

約数の個数: 16

約数和(自身を含む): 29272320

約数和(自身を除く): 8007965

約数列:

[1, 5, 7, 35, 307, 1535, 1979, 2149, 9895, 10745, 13853, 69265, 607553, 3037765, 4252871, 21264355]

約数ペア:

[(1, 21264355), (5, 4252871), (7, 3037765), (35, 607553), (307, 69265), (1535, 13853), (1979, 10745), (2149, 9895)]