27991395

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{8761}}^1$

素因数の和:8843

約数の個数: 24

約数和(自身を含む): 49207392

約数和(自身を除く): 21215997

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 8761, 26283, 43805, 78849, 131415, 394245, 622031, 1866093, 3110155, 5598279, 9330465, 27991395]

約数ペア:

[(1, 27991395), (3, 9330465), (5, 5598279), (9, 3110155), (15, 1866093), (45, 622031), (71, 394245), (213, 131415), (355, 78849), (639, 43805), (1065, 26283), (3195, 8761)]