20945522

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2058

約数の個数: 24

約数和(自身を含む): 35136000

約数和(自身を除く): 14190478

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 1999, 3998, 5239, 10478, 25987, 51974, 61969, 123938, 337831, 675662, 805597, 1611194, 10472761, 20945522]

約数ペア:

[(1, 20945522), (2, 10472761), (13, 1611194), (26, 805597), (31, 675662), (62, 337831), (169, 123938), (338, 61969), (403, 51974), (806, 25987), (1999, 10478), (3998, 5239)]