21015056

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2521}}^1$

素因数の和:3050

約数の個数: 20

約数和(自身を含む): 40811004

約数和(自身を除く): 19795948

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2521, 4168, 5042, 8336, 10084, 20168, 40336, 1313441, 2626882, 5253764, 10507528, 21015056]

約数ペア:

[(1, 21015056), (2, 10507528), (4, 5253764), (8, 2626882), (16, 1313441), (521, 40336), (1042, 20168), (2084, 10084), (2521, 8336), (4168, 5042)]