7880290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1009}}^1$

素因数の和:1098

約数の個数: 32

約数和(自身を含む): 15707520

約数和(自身を除く): 7827230

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1009, 1562, 2018, 3905, 5045, 7810, 10090, 11099, 22198, 55495, 71639, 110990, 143278, 358195, 716390, 788029, 1576058, 3940145, 7880290]

約数ペア:

[(1, 7880290), (2, 3940145), (5, 1576058), (10, 788029), (11, 716390), (22, 358195), (55, 143278), (71, 110990), (110, 71639), (142, 55495), (355, 22198), (710, 11099), (781, 10090), (1009, 7810), (1562, 5045), (2018, 3905)]