1275990160

素因数分解:

$2^4\times 5^1\times {\mathrm{15949877}}^1$

素因数の和:15949890

約数の個数: 20

約数和(自身を含む): 2966677308

約数和(自身を除く): 1690687148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15949877, 31899754, 63799508, 79749385, 127599016, 159498770, 255198032, 318997540, 637995080, 1275990160]

約数ペア:

[(1, 1275990160), (2, 637995080), (4, 318997540), (5, 255198032), (8, 159498770), (10, 127599016), (16, 79749385), (20, 63799508), (40, 31899754), (80, 15949877)]