21855196

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5581}}^1$

素因数の和:5685

約数の個数: 24

約数和(自身を含む): 42199920

約数和(自身を除く): 20344724

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5581, 11162, 22324, 61391, 122782, 245564, 496709, 993418, 1986836, 5463799, 10927598, 21855196]

約数ペア:

[(1, 21855196), (2, 10927598), (4, 5463799), (11, 1986836), (22, 993418), (44, 496709), (89, 245564), (178, 122782), (356, 61391), (979, 22324), (1958, 11162), (3916, 5581)]