21632140

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9923}}^1$

素因数の和:10041

約数の個数: 24

約数和(自身を含む): 45848880

約数和(自身を除く): 24216740

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9923, 19846, 39692, 49615, 99230, 198460, 1081607, 2163214, 4326428, 5408035, 10816070, 21632140]

約数ペア:

[(1, 21632140), (2, 10816070), (4, 5408035), (5, 4326428), (10, 2163214), (20, 1081607), (109, 198460), (218, 99230), (436, 49615), (545, 39692), (1090, 19846), (2180, 9923)]