20819786

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1987}}^1$

素因数の和:2046

約数の個数: 24

約数和(自身を含む): 34925184

約数和(自身を除く): 14105398

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 1987, 3974, 5239, 10478, 25831, 51662, 61597, 123194, 335803, 671606, 800761, 1601522, 10409893, 20819786]

約数ペア:

[(1, 20819786), (2, 10409893), (13, 1601522), (26, 800761), (31, 671606), (62, 335803), (169, 123194), (338, 61597), (403, 51662), (806, 25831), (1987, 10478), (3974, 5239)]