21845620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26641}}^1$

素因数の和:26691

約数の個数: 24

約数和(自身を含む): 46996488

約数和(自身を除く): 25150868

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26641, 53282, 106564, 133205, 266410, 532820, 1092281, 2184562, 4369124, 5461405, 10922810, 21845620]

約数ペア:

[(1, 21845620), (2, 10922810), (4, 5461405), (5, 4369124), (10, 2184562), (20, 1092281), (41, 532820), (82, 266410), (164, 133205), (205, 106564), (410, 53282), (820, 26641)]