21900135

素因数分解:

$3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{10657}}^1$

素因数の和:10802

約数の個数: 16

約数和(自身を含む): 35299296

約数和(自身を除く): 13399161

約数列:

[1, 3, 5, 15, 137, 411, 685, 2055, 10657, 31971, 53285, 159855, 1460009, 4380027, 7300045, 21900135]

約数ペア:

[(1, 21900135), (3, 7300045), (5, 4380027), (15, 1460009), (137, 159855), (411, 53285), (685, 31971), (2055, 10657)]