21096831

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5807}}^1$

素因数の和:5990

約数の個数: 16

約数和(自身を含む): 32338944

約数和(自身を除く): 11242113

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5807, 17421, 40649, 121947, 1004611, 3013833, 7032277, 21096831]

約数ペア:

[(1, 21096831), (3, 7032277), (7, 3013833), (21, 1004611), (173, 121947), (519, 40649), (1211, 17421), (3633, 5807)]