56720120

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{3467}}^1$

素因数の和:3887

約数の個数: 32

約数和(自身を含む): 127969200

約数和(自身を除く): 71249080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 3467, 4090, 6934, 8180, 13868, 16360, 17335, 27736, 34670, 69340, 138680, 1418003, 2836006, 5672012, 7090015, 11344024, 14180030, 28360060, 56720120]

約数ペア:

[(1, 56720120), (2, 28360060), (4, 14180030), (5, 11344024), (8, 7090015), (10, 5672012), (20, 2836006), (40, 1418003), (409, 138680), (818, 69340), (1636, 34670), (2045, 27736), (3272, 17335), (3467, 16360), (4090, 13868), (6934, 8180)]