396890920

素因数分解:

$2^3\times 5^1\times {\mathrm{9922273}}^1$

素因数の和:9922284

約数の個数: 16

約数和(自身を含む): 893004660

約数和(自身を除く): 496113740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9922273, 19844546, 39689092, 49611365, 79378184, 99222730, 198445460, 396890920]

約数ペア:

[(1, 396890920), (2, 198445460), (4, 99222730), (5, 79378184), (8, 49611365), (10, 39689092), (20, 19844546), (40, 9922273)]