21485665

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2087}}^1$

素因数の和:2192

約数の個数: 16

約数和(自身を含む): 27060480

約数和(自身を除く): 5574815

約数列:

[1, 5, 29, 71, 145, 355, 2059, 2087, 10295, 10435, 60523, 148177, 302615, 740885, 4297133, 21485665]

約数ペア:

[(1, 21485665), (5, 4297133), (29, 740885), (71, 302615), (145, 148177), (355, 60523), (2059, 10435), (2087, 10295)]