21357556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{11839}}^1$

素因数の和:11895

約数の個数: 24

約数和(自身を含む): 41771520

約数和(自身を除く): 20413964

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 164, 451, 902, 1804, 11839, 23678, 47356, 130229, 260458, 485399, 520916, 970798, 1941596, 5339389, 10678778, 21357556]

約数ペア:

[(1, 21357556), (2, 10678778), (4, 5339389), (11, 1941596), (22, 970798), (41, 520916), (44, 485399), (82, 260458), (164, 130229), (451, 47356), (902, 23678), (1804, 11839)]