21445255

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 28591920

約数和(自身を除く): 7146665

約数列:

[1, 5, 13, 41, 65, 169, 205, 533, 619, 845, 2665, 3095, 6929, 8047, 25379, 34645, 40235, 104611, 126895, 329927, 523055, 1649635, 4289051, 21445255]

約数ペア:

[(1, 21445255), (5, 4289051), (13, 1649635), (41, 523055), (65, 329927), (169, 126895), (205, 104611), (533, 40235), (619, 34645), (845, 25379), (2665, 8047), (3095, 6929)]