21068360

素因数分解:

$2^3\times 5^1\times {\mathrm{526709}}^1$

素因数の和:526720

約数の個数: 16

約数和(自身を含む): 47403900

約数和(自身を除く): 26335540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526709, 1053418, 2106836, 2633545, 4213672, 5267090, 10534180, 21068360]

約数ペア:

[(1, 21068360), (2, 10534180), (4, 5267090), (5, 4213672), (8, 2633545), (10, 2106836), (20, 1053418), (40, 526709)]