20849859

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{419}}^1$

素因数の和:544

約数の個数: 32

約数和(自身を含む): 32928000

約数和(自身を除く): 12078141

約数列:

[1, 3, 9, 19, 27, 57, 97, 171, 291, 419, 513, 873, 1257, 1843, 2619, 3771, 5529, 7961, 11313, 16587, 23883, 40643, 49761, 71649, 121929, 214947, 365787, 772217, 1097361, 2316651, 6949953, 20849859]

約数ペア:

[(1, 20849859), (3, 6949953), (9, 2316651), (19, 1097361), (27, 772217), (57, 365787), (97, 214947), (171, 121929), (291, 71649), (419, 49761), (513, 40643), (873, 23883), (1257, 16587), (1843, 11313), (2619, 7961), (3771, 5529)]