21446665

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 4784375

約数列:

[1, 5, 131, 137, 239, 655, 685, 1195, 17947, 31309, 32743, 89735, 156545, 163715, 4289333, 21446665]

約数ペア:

[(1, 21446665), (5, 4289333), (131, 163715), (137, 156545), (239, 89735), (655, 32743), (685, 31309), (1195, 17947)]