2778009

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 4408320

約数和(自身を除く): 1630311

約数列:

[1, 3, 13, 19, 23, 39, 57, 69, 163, 247, 299, 437, 489, 741, 897, 1311, 2119, 3097, 3749, 5681, 6357, 9291, 11247, 17043, 40261, 48737, 71231, 120783, 146211, 213693, 926003, 2778009]

約数ペア:

[(1, 2778009), (3, 926003), (13, 213693), (19, 146211), (23, 120783), (39, 71231), (57, 48737), (69, 40261), (163, 17043), (247, 11247), (299, 9291), (437, 6357), (489, 5681), (741, 3749), (897, 3097), (1311, 2119)]