21316310

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51991}}^1$

素因数の和:52039

約数の個数: 16

約数和(自身を含む): 39305952

約数和(自身を除く): 17989642

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51991, 103982, 259955, 519910, 2131631, 4263262, 10658155, 21316310]

約数ペア:

[(1, 21316310), (2, 10658155), (5, 4263262), (10, 2131631), (41, 519910), (82, 259955), (205, 103982), (410, 51991)]