21513115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{179}}^1$

素因数の和:283

約数の個数: 24

約数和(自身を含む): 28622160

約数和(自身を除く): 7109045

約数列:

[1, 5, 13, 43, 65, 179, 215, 559, 895, 1849, 2327, 2795, 7697, 9245, 11635, 24037, 38485, 100061, 120185, 330971, 500305, 1654855, 4302623, 21513115]

約数ペア:

[(1, 21513115), (5, 4302623), (13, 1654855), (43, 500305), (65, 330971), (179, 120185), (215, 100061), (559, 38485), (895, 24037), (1849, 11635), (2327, 9245), (2795, 7697)]