19640968

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 38034360

約数和(自身を除く): 18393392

約数列:

[1, 2, 4, 8, 41, 82, 164, 233, 257, 328, 466, 514, 932, 1028, 1864, 2056, 9553, 10537, 19106, 21074, 38212, 42148, 59881, 76424, 84296, 119762, 239524, 479048, 2455121, 4910242, 9820484, 19640968]

約数ペア:

[(1, 19640968), (2, 9820484), (4, 4910242), (8, 2455121), (41, 479048), (82, 239524), (164, 119762), (233, 84296), (257, 76424), (328, 59881), (466, 42148), (514, 38212), (932, 21074), (1028, 19106), (1864, 10537), (2056, 9553)]