20686786

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1\times {\mathrm{487}}^1$

素因数の和:873

約数の個数: 16

約数和(自身を含む): 31657536

約数和(自身を除く): 10970750

約数列:

[1, 2, 67, 134, 317, 487, 634, 974, 21239, 32629, 42478, 65258, 154379, 308758, 10343393, 20686786]

約数ペア:

[(1, 20686786), (2, 10343393), (67, 308758), (134, 154379), (317, 65258), (487, 42478), (634, 32629), (974, 21239)]