217025823

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{857}}^1$

素因数の和:1287

約数の個数: 32

約数和(自身を含む): 342650880

約数和(自身を除く): 125625057

約数列:

[1, 3, 7, 21, 31, 93, 217, 389, 651, 857, 1167, 2571, 2723, 5999, 8169, 12059, 17997, 26567, 36177, 79701, 84413, 185969, 253239, 333373, 557907, 1000119, 2333611, 7000833, 10334563, 31003689, 72341941, 217025823]

約数ペア:

[(1, 217025823), (3, 72341941), (7, 31003689), (21, 10334563), (31, 7000833), (93, 2333611), (217, 1000119), (389, 557907), (651, 333373), (857, 253239), (1167, 185969), (2571, 84413), (2723, 79701), (5999, 36177), (8169, 26567), (12059, 17997)]