21522556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{509}}^1$

素因数の和:586

約数の個数: 36

約数和(自身を含む): 42540120

約数和(自身を除く): 21017564

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 509, 682, 961, 1018, 1364, 1922, 2036, 3844, 5599, 10571, 11198, 15779, 21142, 22396, 31558, 42284, 63116, 173569, 347138, 489149, 694276, 978298, 1956596, 5380639, 10761278, 21522556]

約数ペア:

[(1, 21522556), (2, 10761278), (4, 5380639), (11, 1956596), (22, 978298), (31, 694276), (44, 489149), (62, 347138), (124, 173569), (341, 63116), (509, 42284), (682, 31558), (961, 22396), (1018, 21142), (1364, 15779), (1922, 11198), (2036, 10571), (3844, 5599)]