21912847

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 26038512

約数和(自身を除く): 4125665

約数列:

[1, 11, 17, 61, 113, 187, 289, 671, 1037, 1243, 1921, 3179, 6893, 11407, 17629, 21131, 32657, 75823, 117181, 193919, 359227, 1288991, 1992077, 21912847]

約数ペア:

[(1, 21912847), (11, 1992077), (17, 1288991), (61, 359227), (113, 193919), (187, 117181), (289, 75823), (671, 32657), (1037, 21131), (1243, 17629), (1921, 11407), (3179, 6893)]