21123590

素因数分解:

$2^1\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{1871}}^1$

素因数の和:3007

約数の個数: 16

約数和(自身を含む): 38076480

約数和(自身を除く): 16952890

約数列:

[1, 2, 5, 10, 1129, 1871, 2258, 3742, 5645, 9355, 11290, 18710, 2112359, 4224718, 10561795, 21123590]

約数ペア:

[(1, 21123590), (2, 10561795), (5, 4224718), (10, 2112359), (1129, 18710), (1871, 11290), (2258, 9355), (3742, 5645)]