21979600

素因数分解:

$2^4\times 5^2\times {\mathrm{54949}}^1$

素因数の和:54967

約数の個数: 30

約数和(自身を含む): 52806950

約数和(自身を除く): 30827350

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54949, 109898, 219796, 274745, 439592, 549490, 879184, 1098980, 1373725, 2197960, 2747450, 4395920, 5494900, 10989800, 21979600]

約数ペア:

[(1, 21979600), (2, 10989800), (4, 5494900), (5, 4395920), (8, 2747450), (10, 2197960), (16, 1373725), (20, 1098980), (25, 879184), (40, 549490), (50, 439592), (80, 274745), (100, 219796), (200, 109898), (400, 54949)]