21103240

素因数分解:

$2^3\times 5^1\times {\mathrm{527581}}^1$

素因数の和:527592

約数の個数: 16

約数和(自身を含む): 47482380

約数和(自身を除く): 26379140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 527581, 1055162, 2110324, 2637905, 4220648, 5275810, 10551620, 21103240]

約数ペア:

[(1, 21103240), (2, 10551620), (4, 5275810), (5, 4220648), (8, 2637905), (10, 2110324), (20, 1055162), (40, 527581)]