20698768

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 20861072

約数列:

[1, 2, 4, 8, 16, 41, 82, 139, 164, 227, 278, 328, 454, 556, 656, 908, 1112, 1816, 2224, 3632, 5699, 9307, 11398, 18614, 22796, 31553, 37228, 45592, 63106, 74456, 91184, 126212, 148912, 252424, 504848, 1293673, 2587346, 5174692, 10349384, 20698768]

約数ペア:

[(1, 20698768), (2, 10349384), (4, 5174692), (8, 2587346), (16, 1293673), (41, 504848), (82, 252424), (139, 148912), (164, 126212), (227, 91184), (278, 74456), (328, 63106), (454, 45592), (556, 37228), (656, 31553), (908, 22796), (1112, 18614), (1816, 11398), (2224, 9307), (3632, 5699)]