21391206

素因数分解:

$2^1\times 3^1\times {\mathrm{331}}^1\times {\mathrm{10771}}^1$

素因数の和:11107

約数の個数: 16

約数和(自身を含む): 42915648

約数和(自身を除く): 21524442

約数列:

[1, 2, 3, 6, 331, 662, 993, 1986, 10771, 21542, 32313, 64626, 3565201, 7130402, 10695603, 21391206]

約数ペア:

[(1, 21391206), (2, 10695603), (3, 7130402), (6, 3565201), (331, 64626), (662, 32313), (993, 21542), (1986, 10771)]