397070920

素因数分解:

$2^3\times 5^1\times {\mathrm{9926773}}^1$

素因数の和:9926784

約数の個数: 16

約数和(自身を含む): 893409660

約数和(自身を除く): 496338740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9926773, 19853546, 39707092, 49633865, 79414184, 99267730, 198535460, 397070920]

約数ペア:

[(1, 397070920), (2, 198535460), (4, 99267730), (5, 79414184), (8, 49633865), (10, 39707092), (20, 19853546), (40, 9926773)]