13278815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 18627840

約数和(自身を除く): 5349025

約数列:

[1, 5, 11, 19, 55, 95, 97, 131, 209, 485, 655, 1045, 1067, 1441, 1843, 2489, 5335, 7205, 9215, 12445, 12707, 20273, 27379, 63535, 101365, 136895, 139777, 241433, 698885, 1207165, 2655763, 13278815]

約数ペア:

[(1, 13278815), (5, 2655763), (11, 1207165), (19, 698885), (55, 241433), (95, 139777), (97, 136895), (131, 101365), (209, 63535), (485, 27379), (655, 20273), (1045, 12707), (1067, 12445), (1441, 9215), (1843, 7205), (2489, 5335)]