20400944

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 40966128

約数和(自身を除く): 20565184

約数列:

[1, 2, 4, 8, 16, 41, 82, 137, 164, 227, 274, 328, 454, 548, 656, 908, 1096, 1816, 2192, 3632, 5617, 9307, 11234, 18614, 22468, 31099, 37228, 44936, 62198, 74456, 89872, 124396, 148912, 248792, 497584, 1275059, 2550118, 5100236, 10200472, 20400944]

約数ペア:

[(1, 20400944), (2, 10200472), (4, 5100236), (8, 2550118), (16, 1275059), (41, 497584), (82, 248792), (137, 148912), (164, 124396), (227, 89872), (274, 74456), (328, 62198), (454, 44936), (548, 37228), (656, 31099), (908, 22468), (1096, 18614), (1816, 11234), (2192, 9307), (3632, 5617)]