12990215

素因数分解:

$5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1759}}^1$

素因数の和:1982

約数の個数: 16

約数和(自身を含む): 17909760

約数和(自身を除く): 4919545

約数列:

[1, 5, 7, 35, 211, 1055, 1477, 1759, 7385, 8795, 12313, 61565, 371149, 1855745, 2598043, 12990215]

約数ペア:

[(1, 12990215), (5, 2598043), (7, 1855745), (35, 371149), (211, 61565), (1055, 12313), (1477, 8795), (1759, 7385)]