21821613

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 33288192

約数和(自身を除く): 11466579

約数列:

[1, 3, 11, 31, 33, 83, 93, 249, 257, 341, 771, 913, 1023, 2573, 2739, 2827, 7719, 7967, 8481, 21331, 23901, 28303, 63993, 84909, 87637, 234641, 262911, 661261, 703923, 1983783, 7273871, 21821613]

約数ペア:

[(1, 21821613), (3, 7273871), (11, 1983783), (31, 703923), (33, 661261), (83, 262911), (93, 234641), (249, 87637), (257, 84909), (341, 63993), (771, 28303), (913, 23901), (1023, 21331), (2573, 8481), (2739, 7967), (2827, 7719)]