20523986

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 36461568

約数和(自身を除く): 15937582

約数列:

[1, 2, 7, 14, 43, 86, 103, 206, 301, 331, 602, 662, 721, 1442, 2317, 4429, 4634, 8858, 14233, 28466, 31003, 34093, 62006, 68186, 99631, 199262, 238651, 477302, 1465999, 2931998, 10261993, 20523986]

約数ペア:

[(1, 20523986), (2, 10261993), (7, 2931998), (14, 1465999), (43, 477302), (86, 238651), (103, 199262), (206, 99631), (301, 68186), (331, 62006), (602, 34093), (662, 31003), (721, 28466), (1442, 14233), (2317, 8858), (4429, 4634)]