1388335

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:115

約数の個数: 24

約数和(自身を含む): 1897344

約数和(自身を除く): 509009

約数列:

[1, 5, 13, 31, 53, 65, 155, 169, 265, 403, 689, 845, 1643, 2015, 3445, 5239, 8215, 8957, 21359, 26195, 44785, 106795, 277667, 1388335]

約数ペア:

[(1, 1388335), (5, 277667), (13, 106795), (31, 44785), (53, 26195), (65, 21359), (155, 8957), (169, 8215), (265, 5239), (403, 3445), (689, 2015), (845, 1643)]