261868995

素因数分解:

$3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{17581}}^1$

素因数の和:17923

約数の個数: 24

約数和(自身を含む): 455303472

約数和(自身を除く): 193434477

約数列:

[1, 3, 5, 9, 15, 45, 331, 993, 1655, 2979, 4965, 14895, 17581, 52743, 87905, 158229, 263715, 791145, 5819311, 17457933, 29096555, 52373799, 87289665, 261868995]

約数ペア:

[(1, 261868995), (3, 87289665), (5, 52373799), (9, 29096555), (15, 17457933), (45, 5819311), (331, 791145), (993, 263715), (1655, 158229), (2979, 87905), (4965, 52743), (14895, 17581)]