668897271

素因数分解:

$3^4\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1499}}^1$

素因数の和:2305

約数の個数: 40

約数和(自身を含む): 1144176000

約数和(自身を除く): 475278729

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 787, 1499, 2361, 4497, 5509, 7083, 10493, 13491, 16527, 21249, 31479, 40473, 49581, 63747, 94437, 121419, 148743, 283311, 446229, 849933, 1179713, 3539139, 8257991, 10617417, 24773973, 31852251, 74321919, 95556753, 222965757, 668897271]

約数ペア:

[(1, 668897271), (3, 222965757), (7, 95556753), (9, 74321919), (21, 31852251), (27, 24773973), (63, 10617417), (81, 8257991), (189, 3539139), (567, 1179713), (787, 849933), (1499, 446229), (2361, 283311), (4497, 148743), (5509, 121419), (7083, 94437), (10493, 63747), (13491, 49581), (16527, 40473), (21249, 31479)]