1917369516321

素因数分解:

$3^2\times 7^2\times {\mathrm{4347776681}}^1$

素因数の和:4347776701

約数の個数: 18

約数和(自身を含む): 3221702521362

約数和(自身を除く): 1304333005041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4347776681, 13043330043, 30434436767, 39129990129, 91303310301, 213041057369, 273909930903, 639123172107, 1917369516321]

約数ペア:

[(1, 1917369516321), (3, 639123172107), (7, 273909930903), (9, 213041057369), (21, 91303310301), (49, 39129990129), (63, 30434436767), (147, 13043330043), (441, 4347776681)]