20995600

素因数分解:

$2^4\times 5^2\times {\mathrm{52489}}^1$

素因数の和:52507

約数の個数: 30

約数和(自身を含む): 50442890

約数和(自身を除く): 29447290

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52489, 104978, 209956, 262445, 419912, 524890, 839824, 1049780, 1312225, 2099560, 2624450, 4199120, 5248900, 10497800, 20995600]

約数ペア:

[(1, 20995600), (2, 10497800), (4, 5248900), (5, 4199120), (8, 2624450), (10, 2099560), (16, 1312225), (20, 1049780), (25, 839824), (40, 524890), (50, 419912), (80, 262445), (100, 209956), (200, 104978), (400, 52489)]