21666327

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 31825920

約数和(自身を除く): 10159593

約数列:

[1, 3, 19, 41, 57, 73, 123, 127, 219, 381, 779, 1387, 2337, 2413, 2993, 4161, 5207, 7239, 8979, 9271, 15621, 27813, 56867, 98933, 170601, 176149, 296799, 380111, 528447, 1140333, 7222109, 21666327]

約数ペア:

[(1, 21666327), (3, 7222109), (19, 1140333), (41, 528447), (57, 380111), (73, 296799), (123, 176149), (127, 170601), (219, 98933), (381, 56867), (779, 27813), (1387, 15621), (2337, 9271), (2413, 8979), (2993, 7239), (4161, 5207)]