68892440

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4091}}^1$

素因数の和:4523

約数の個数: 32

約数和(自身を含む): 155414160

約数和(自身を除く): 86521720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4091, 4210, 8182, 8420, 16364, 16840, 20455, 32728, 40910, 81820, 163640, 1722311, 3444622, 6889244, 8611555, 13778488, 17223110, 34446220, 68892440]

約数ペア:

[(1, 68892440), (2, 34446220), (4, 17223110), (5, 13778488), (8, 8611555), (10, 6889244), (20, 3444622), (40, 1722311), (421, 163640), (842, 81820), (1684, 40910), (2105, 32728), (3368, 20455), (4091, 16840), (4210, 16364), (8182, 8420)]