278325723

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1\times {\mathrm{281}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 406486080

約数和(自身を除く): 128160357

約数列:

[1, 3, 13, 39, 109, 233, 281, 327, 699, 843, 1417, 3029, 3653, 4251, 9087, 10959, 25397, 30629, 65473, 76191, 91887, 196419, 330161, 398177, 851149, 990483, 1194531, 2553447, 7136557, 21409671, 92775241, 278325723]

約数ペア:

[(1, 278325723), (3, 92775241), (13, 21409671), (39, 7136557), (109, 2553447), (233, 1194531), (281, 990483), (327, 851149), (699, 398177), (843, 330161), (1417, 196419), (3029, 91887), (3653, 76191), (4251, 65473), (9087, 30629), (10959, 25397)]