2778447

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 4424112

約数和(自身を除く): 1645665

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 461, 861, 1383, 2009, 3227, 6027, 9681, 18901, 22589, 56703, 67767, 132307, 396921, 926149, 2778447]

約数ペア:

[(1, 2778447), (3, 926149), (7, 396921), (21, 132307), (41, 67767), (49, 56703), (123, 22589), (147, 18901), (287, 9681), (461, 6027), (861, 3227), (1383, 2009)]