68218120

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{4253}}^1$

素因数の和:4665

約数の個数: 32

約数和(自身を含む): 153909720

約数和(自身を除く): 85691600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 4253, 8020, 8506, 16040, 17012, 21265, 34024, 42530, 85060, 170120, 1705453, 3410906, 6821812, 8527265, 13643624, 17054530, 34109060, 68218120]

約数ペア:

[(1, 68218120), (2, 34109060), (4, 17054530), (5, 13643624), (8, 8527265), (10, 6821812), (20, 3410906), (40, 1705453), (401, 170120), (802, 85060), (1604, 42530), (2005, 34024), (3208, 21265), (4010, 17012), (4253, 16040), (8020, 8506)]