20140731

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 33500544

約数和(自身を除く): 13359813

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 279, 351, 403, 617, 837, 1053, 1209, 1851, 2511, 3627, 5553, 8021, 10881, 16659, 19127, 24063, 32643, 49977, 57381, 72189, 172143, 216567, 248651, 516429, 649701, 745953, 1549287, 2237859, 6713577, 20140731]

約数ペア:

[(1, 20140731), (3, 6713577), (9, 2237859), (13, 1549287), (27, 745953), (31, 649701), (39, 516429), (81, 248651), (93, 216567), (117, 172143), (279, 72189), (351, 57381), (403, 49977), (617, 32643), (837, 24063), (1053, 19127), (1209, 16659), (1851, 10881), (2511, 8021), (3627, 5553)]