127991120

素因数分解:

$2^4\times 5^1\times {\mathrm{1599889}}^1$

素因数の和:1599902

約数の個数: 20

約数和(自身を含む): 297579540

約数和(自身を除く): 169588420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1599889, 3199778, 6399556, 7999445, 12799112, 15998890, 25598224, 31997780, 63995560, 127991120]

約数ペア:

[(1, 127991120), (2, 63995560), (4, 31997780), (5, 25598224), (8, 15998890), (10, 12799112), (16, 7999445), (20, 6399556), (40, 3199778), (80, 1599889)]