21285681

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 10202319

約数列:

[1, 3, 19, 29, 57, 79, 87, 163, 237, 489, 551, 1501, 1653, 2291, 3097, 4503, 4727, 6873, 9291, 12877, 14181, 38631, 43529, 89813, 130587, 244663, 269439, 373433, 733989, 1120299, 7095227, 21285681]

約数ペア:

[(1, 21285681), (3, 7095227), (19, 1120299), (29, 733989), (57, 373433), (79, 269439), (87, 244663), (163, 130587), (237, 89813), (489, 43529), (551, 38631), (1501, 14181), (1653, 12877), (2291, 9291), (3097, 6873), (4503, 4727)]