51567440

素因数分解:

$2^4\times 5^1\times {\mathrm{644593}}^1$

素因数の和:644606

約数の個数: 20

約数和(自身を含む): 119894484

約数和(自身を除く): 68327044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644593, 1289186, 2578372, 3222965, 5156744, 6445930, 10313488, 12891860, 25783720, 51567440]

約数ペア:

[(1, 51567440), (2, 25783720), (4, 12891860), (5, 10313488), (8, 6445930), (10, 5156744), (16, 3222965), (20, 2578372), (40, 1289186), (80, 644593)]