212218559

素因数分解:

$7^3\times {\mathrm{131}}^1\times {\mathrm{4723}}^1$

素因数の和:4875

約数の個数: 16

約数和(自身を含む): 249427200

約数和(自身を除く): 37208641

約数列:

[1, 7, 49, 131, 343, 917, 4723, 6419, 33061, 44933, 231427, 618713, 1619989, 4330991, 30316937, 212218559]

約数ペア:

[(1, 212218559), (7, 30316937), (49, 4330991), (131, 1619989), (343, 618713), (917, 231427), (4723, 44933), (6419, 33061)]