1295721

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 2169024

約数和(自身を除く): 873303

約数列:

[1, 3, 7, 9, 21, 63, 131, 157, 393, 471, 917, 1099, 1179, 1413, 2751, 3297, 8253, 9891, 20567, 61701, 143969, 185103, 431907, 1295721]

約数ペア:

[(1, 1295721), (3, 431907), (7, 185103), (9, 143969), (21, 61701), (63, 20567), (131, 9891), (157, 8253), (393, 3297), (471, 2751), (917, 1413), (1099, 1179)]