261293319

素因数分解:

$3^2\times 7^1\times {\mathrm{431}}^1\times {\mathrm{9623}}^1$

素因数の和:10067

約数の個数: 24

約数和(自身を含む): 432387072

約数和(自身を除く): 171093753

約数列:

[1, 3, 7, 9, 21, 63, 431, 1293, 3017, 3879, 9051, 9623, 27153, 28869, 67361, 86607, 202083, 606249, 4147513, 12442539, 29032591, 37327617, 87097773, 261293319]

約数ペア:

[(1, 261293319), (3, 87097773), (7, 37327617), (9, 29032591), (21, 12442539), (63, 4147513), (431, 606249), (1293, 202083), (3017, 86607), (3879, 67361), (9051, 28869), (9623, 27153)]