21578715

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20849}}^1$

素因数の和:20883

約数の個数: 24

約数和(自身を含む): 39031200

約数和(自身を除く): 17452485

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20849, 62547, 104245, 187641, 312735, 479527, 938205, 1438581, 2397635, 4315743, 7192905, 21578715]

約数ペア:

[(1, 21578715), (3, 7192905), (5, 4315743), (9, 2397635), (15, 1438581), (23, 938205), (45, 479527), (69, 312735), (115, 187641), (207, 104245), (345, 62547), (1035, 20849)]