20006690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{761}}^1$

素因数の和:1018

約数の個数: 32

約数和(自身を含む): 39502080

約数和(自身を除く): 19495390

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 239, 478, 761, 1195, 1522, 2390, 2629, 3805, 5258, 7610, 8371, 13145, 16742, 26290, 41855, 83710, 181879, 363758, 909395, 1818790, 2000669, 4001338, 10003345, 20006690]

約数ペア:

[(1, 20006690), (2, 10003345), (5, 4001338), (10, 2000669), (11, 1818790), (22, 909395), (55, 363758), (110, 181879), (239, 83710), (478, 41855), (761, 26290), (1195, 16742), (1522, 13145), (2390, 8371), (2629, 7610), (3805, 5258)]