21272665

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1933}}^1$

素因数の和:2040

約数の個数: 16

約数和(自身を含む): 26735616

約数和(自身を除く): 5462951

約数列:

[1, 5, 31, 71, 155, 355, 1933, 2201, 9665, 11005, 59923, 137243, 299615, 686215, 4254533, 21272665]

約数ペア:

[(1, 21272665), (5, 4254533), (31, 686215), (71, 299615), (155, 137243), (355, 59923), (1933, 11005), (2201, 9665)]