21908678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 37231488

約数和(自身を除く): 15322810

約数列:

[1, 2, 11, 22, 41, 82, 107, 214, 227, 451, 454, 902, 1177, 2354, 2497, 4387, 4994, 8774, 9307, 18614, 24289, 48257, 48578, 96514, 102377, 204754, 267179, 534358, 995849, 1991698, 10954339, 21908678]

約数ペア:

[(1, 21908678), (2, 10954339), (11, 1991698), (22, 995849), (41, 534358), (82, 267179), (107, 204754), (214, 102377), (227, 96514), (451, 48578), (454, 48257), (902, 24289), (1177, 18614), (2354, 9307), (2497, 8774), (4387, 4994)]