21813130

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29881}}^1$

素因数の和:29961

約数の個数: 16

約数和(自身を含む): 39802824

約数和(自身を除く): 17989694

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29881, 59762, 149405, 298810, 2181313, 4362626, 10906565, 21813130]

約数ペア:

[(1, 21813130), (2, 10906565), (5, 4362626), (10, 2181313), (73, 298810), (146, 149405), (365, 59762), (730, 29881)]