21784815

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12413}}^1$

素因数の和:12440

約数の個数: 32

約数和(自身を含む): 41711040

約数和(自身を除く): 19926225

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12413, 37239, 62065, 111717, 161369, 186195, 335151, 484107, 558585, 806845, 1452321, 1675755, 2420535, 4356963, 7261605, 21784815]

約数ペア:

[(1, 21784815), (3, 7261605), (5, 4356963), (9, 2420535), (13, 1675755), (15, 1452321), (27, 806845), (39, 558585), (45, 484107), (65, 335151), (117, 186195), (135, 161369), (195, 111717), (351, 62065), (585, 37239), (1755, 12413)]