21049795

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{859}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 28328400

約数和(自身を除く): 7278605

約数列:

[1, 5, 13, 29, 65, 145, 169, 377, 845, 859, 1885, 4295, 4901, 11167, 24505, 24911, 55835, 124555, 145171, 323843, 725855, 1619215, 4209959, 21049795]

約数ペア:

[(1, 21049795), (5, 4209959), (13, 1619215), (29, 725855), (65, 323843), (145, 145171), (169, 124555), (377, 55835), (845, 24911), (859, 24505), (1885, 11167), (4295, 4901)]