61344440

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3863}}^1$

素因数の和:4271

約数の個数: 32

約数和(自身を含む): 138408480

約数和(自身を除く): 77064040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3863, 3970, 7726, 7940, 15452, 15880, 19315, 30904, 38630, 77260, 154520, 1533611, 3067222, 6134444, 7668055, 12268888, 15336110, 30672220, 61344440]

約数ペア:

[(1, 61344440), (2, 30672220), (4, 15336110), (5, 12268888), (8, 7668055), (10, 6134444), (20, 3067222), (40, 1533611), (397, 154520), (794, 77260), (1588, 38630), (1985, 30904), (3176, 19315), (3863, 15880), (3970, 15452), (7726, 7940)]