21353210

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52081}}^1$

素因数の和:52129

約数の個数: 16

約数和(自身を含む): 39373992

約数和(自身を除く): 18020782

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52081, 104162, 260405, 520810, 2135321, 4270642, 10676605, 21353210]

約数ペア:

[(1, 21353210), (2, 10676605), (5, 4270642), (10, 2135321), (41, 520810), (82, 260405), (205, 104162), (410, 52081)]