21011811

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4289}}^1$

素因数の和:4386

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8640669

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4289, 4899, 12867, 98647, 295941, 304519, 913557, 7003937, 21011811]

約数ペア:

[(1, 21011811), (3, 7003937), (23, 913557), (69, 304519), (71, 295941), (213, 98647), (1633, 12867), (4289, 4899)]