21225290

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51769}}^1$

素因数の和:51817

約数の個数: 16

約数和(自身を含む): 39138120

約数和(自身を除く): 17912830

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51769, 103538, 258845, 517690, 2122529, 4245058, 10612645, 21225290]

約数ペア:

[(1, 21225290), (2, 10612645), (5, 4245058), (10, 2122529), (41, 517690), (82, 258845), (205, 103538), (410, 51769)]