256112493

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{2239}}^1$

素因数の和:2681

約数の個数: 32

約数和(自身を含む): 421478400

約数和(自身を除く): 165365907

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 419, 1257, 2239, 2933, 5447, 6717, 8799, 15673, 16341, 29107, 38129, 47019, 87321, 114387, 203749, 611247, 938141, 2814423, 6566987, 12195833, 19700961, 36587499, 85370831, 256112493]

約数ペア:

[(1, 256112493), (3, 85370831), (7, 36587499), (13, 19700961), (21, 12195833), (39, 6566987), (91, 2814423), (273, 938141), (419, 611247), (1257, 203749), (2239, 114387), (2933, 87321), (5447, 47019), (6717, 38129), (8799, 29107), (15673, 16341)]