90212560

素因数分解:

$2^4\times 5^1\times {\mathrm{1127657}}^1$

素因数の和:1127670

約数の個数: 20

約数和(自身を含む): 209744388

約数和(自身を除く): 119531828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1127657, 2255314, 4510628, 5638285, 9021256, 11276570, 18042512, 22553140, 45106280, 90212560]

約数ペア:

[(1, 90212560), (2, 45106280), (4, 22553140), (5, 18042512), (8, 11276570), (10, 9021256), (16, 5638285), (20, 4510628), (40, 2255314), (80, 1127657)]