20999902

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{7177}}^1$

素因数の和:7216

約数の個数: 32

約数和(自身を含む): 41345280

約数和(自身を除く): 20345378

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 133, 154, 209, 266, 418, 1463, 2926, 7177, 14354, 50239, 78947, 100478, 136363, 157894, 272726, 552629, 954541, 1105258, 1499993, 1909082, 2999986, 10499951, 20999902]

約数ペア:

[(1, 20999902), (2, 10499951), (7, 2999986), (11, 1909082), (14, 1499993), (19, 1105258), (22, 954541), (38, 552629), (77, 272726), (133, 157894), (154, 136363), (209, 100478), (266, 78947), (418, 50239), (1463, 14354), (2926, 7177)]