21207993

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{11239}}^1$

素因数の和:11296

約数の個数: 16

約数和(自身を含む): 30752640

約数和(自身を除く): 9544647

約数列:

[1, 3, 17, 37, 51, 111, 629, 1887, 11239, 33717, 191063, 415843, 573189, 1247529, 7069331, 21207993]

約数ペア:

[(1, 21207993), (3, 7069331), (17, 1247529), (37, 573189), (51, 415843), (111, 191063), (629, 33717), (1887, 11239)]