129725968

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{197753}}^1$

素因数の和:197802

約数の個数: 20

約数和(自身を含む): 257475708

約数和(自身を除く): 127749740

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 197753, 395506, 791012, 1582024, 3164048, 8107873, 16215746, 32431492, 64862984, 129725968]

約数ペア:

[(1, 129725968), (2, 64862984), (4, 32431492), (8, 16215746), (16, 8107873), (41, 3164048), (82, 1582024), (164, 791012), (328, 395506), (656, 197753)]