21288676

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{479}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 38384640

約数和(自身を除く): 17095964

約数列:

[1, 2, 4, 41, 82, 164, 271, 479, 542, 958, 1084, 1916, 11111, 19639, 22222, 39278, 44444, 78556, 129809, 259618, 519236, 5322169, 10644338, 21288676]

約数ペア:

[(1, 21288676), (2, 10644338), (4, 5322169), (41, 519236), (82, 259618), (164, 129809), (271, 78556), (479, 44444), (542, 39278), (958, 22222), (1084, 19639), (1916, 11111)]