397489480

素因数分解:

$2^3\times 5^1\times {\mathrm{9937237}}^1$

素因数の和:9937248

約数の個数: 16

約数和(自身を含む): 894351420

約数和(自身を除く): 496861940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9937237, 19874474, 39748948, 49686185, 79497896, 99372370, 198744740, 397489480]

約数ペア:

[(1, 397489480), (2, 198744740), (4, 99372370), (5, 79497896), (8, 49686185), (10, 39748948), (20, 19874474), (40, 9937237)]