21811948

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 39259584

約数和(自身を除く): 17447636

約数列:

[1, 2, 4, 47, 94, 181, 188, 362, 641, 724, 1282, 2564, 8507, 17014, 30127, 34028, 60254, 116021, 120508, 232042, 464084, 5452987, 10905974, 21811948]

約数ペア:

[(1, 21811948), (2, 10905974), (4, 5452987), (47, 464084), (94, 232042), (181, 120508), (188, 116021), (362, 60254), (641, 34028), (724, 30127), (1282, 17014), (2564, 8507)]