21265047

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3361}}^1$

素因数の和:3423

約数の個数: 24

約数和(自身を含む): 33216560

約数和(自身を除く): 11951513

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 333, 703, 2109, 3361, 6327, 10083, 30249, 63859, 124357, 191577, 373071, 574731, 1119213, 2362783, 7088349, 21265047]

約数ペア:

[(1, 21265047), (3, 7088349), (9, 2362783), (19, 1119213), (37, 574731), (57, 373071), (111, 191577), (171, 124357), (333, 63859), (703, 30249), (2109, 10083), (3361, 6327)]