389634160

素因数分解:

$2^4\times 5^1\times {\mathrm{4870427}}^1$

素因数の和:4870440

約数の個数: 20

約数和(自身を含む): 905899608

約数和(自身を除く): 516265448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4870427, 9740854, 19481708, 24352135, 38963416, 48704270, 77926832, 97408540, 194817080, 389634160]

約数ペア:

[(1, 389634160), (2, 194817080), (4, 97408540), (5, 77926832), (8, 48704270), (10, 38963416), (16, 24352135), (20, 19481708), (40, 9740854), (80, 4870427)]