664986

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 1548288

約数和(自身を除く): 883302

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 142, 213, 223, 426, 446, 497, 669, 994, 1338, 1491, 1561, 2982, 3122, 4683, 9366, 15833, 31666, 47499, 94998, 110831, 221662, 332493, 664986]

約数ペア:

[(1, 664986), (2, 332493), (3, 221662), (6, 110831), (7, 94998), (14, 47499), (21, 31666), (42, 15833), (71, 9366), (142, 4683), (213, 3122), (223, 2982), (426, 1561), (446, 1491), (497, 1338), (669, 994)]