20727585

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 37702080

約数和(自身を除く): 16974495

約数列:

[1, 3, 5, 9, 15, 37, 45, 59, 111, 177, 185, 211, 295, 333, 531, 555, 633, 885, 1055, 1665, 1899, 2183, 2655, 3165, 6549, 7807, 9495, 10915, 12449, 19647, 23421, 32745, 37347, 39035, 62245, 70263, 98235, 112041, 117105, 186735, 351315, 460613, 560205, 1381839, 2303065, 4145517, 6909195, 20727585]

約数ペア:

[(1, 20727585), (3, 6909195), (5, 4145517), (9, 2303065), (15, 1381839), (37, 560205), (45, 460613), (59, 351315), (111, 186735), (177, 117105), (185, 112041), (211, 98235), (295, 70263), (333, 62245), (531, 39035), (555, 37347), (633, 32745), (885, 23421), (1055, 19647), (1665, 12449), (1899, 10915), (2183, 9495), (2655, 7807), (3165, 6549)]