20145753

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:227

約数の個数: 40

約数和(自身を含む): 31781376

約数和(自身を除く): 11635623

約数列:

[1, 3, 9, 27, 31, 71, 81, 93, 113, 213, 279, 339, 639, 837, 1017, 1917, 2201, 2511, 3051, 3503, 5751, 6603, 8023, 9153, 10509, 19809, 24069, 31527, 59427, 72207, 94581, 178281, 216621, 248713, 283743, 649863, 746139, 2238417, 6715251, 20145753]

約数ペア:

[(1, 20145753), (3, 6715251), (9, 2238417), (27, 746139), (31, 649863), (71, 283743), (81, 248713), (93, 216621), (113, 178281), (213, 94581), (279, 72207), (339, 59427), (639, 31527), (837, 24069), (1017, 19809), (1917, 10509), (2201, 9153), (2511, 8023), (3051, 6603), (3503, 5751)]