643788

素因数分解:

$2^2\times 3^4\times {\mathrm{1987}}^1$

素因数の和:2003

約数の個数: 30

約数和(自身を含む): 1683836

約数和(自身を除く): 1040048

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 1987, 3974, 5961, 7948, 11922, 17883, 23844, 35766, 53649, 71532, 107298, 160947, 214596, 321894, 643788]

約数ペア:

[(1, 643788), (2, 321894), (3, 214596), (4, 160947), (6, 107298), (9, 71532), (12, 53649), (18, 35766), (27, 23844), (36, 17883), (54, 11922), (81, 7948), (108, 5961), (162, 3974), (324, 1987)]