21632560

素因数分解:

$2^4\times 5^1\times {\mathrm{270407}}^1$

素因数の和:270420

約数の個数: 20

約数和(自身を含む): 50295888

約数和(自身を除く): 28663328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270407, 540814, 1081628, 1352035, 2163256, 2704070, 4326512, 5408140, 10816280, 21632560]

約数ペア:

[(1, 21632560), (2, 10816280), (4, 5408140), (5, 4326512), (8, 2704070), (10, 2163256), (16, 1352035), (20, 1081628), (40, 540814), (80, 270407)]