397138160

素因数分解:

$2^4\times 5^1\times {\mathrm{4964227}}^1$

素因数の和:4964240

約数の個数: 20

約数和(自身を含む): 923346408

約数和(自身を除く): 526208248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4964227, 9928454, 19856908, 24821135, 39713816, 49642270, 79427632, 99284540, 198569080, 397138160]

約数ペア:

[(1, 397138160), (2, 198569080), (4, 99284540), (5, 79427632), (8, 49642270), (10, 39713816), (16, 24821135), (20, 19856908), (40, 9928454), (80, 4964227)]