18695205

素因数分解:

$3^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:269

約数の個数: 56

約数和(自身を含む): 35255808

約数和(自身を除く): 16560603

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 223, 243, 345, 405, 621, 669, 729, 1035, 1115, 1215, 1863, 2007, 3105, 3345, 3645, 5129, 5589, 6021, 9315, 10035, 15387, 16767, 18063, 25645, 27945, 30105, 46161, 54189, 76935, 83835, 90315, 138483, 162567, 230805, 270945, 415449, 692415, 812835, 1246347, 2077245, 3739041, 6231735, 18695205]

約数ペア:

[(1, 18695205), (3, 6231735), (5, 3739041), (9, 2077245), (15, 1246347), (23, 812835), (27, 692415), (45, 415449), (69, 270945), (81, 230805), (115, 162567), (135, 138483), (207, 90315), (223, 83835), (243, 76935), (345, 54189), (405, 46161), (621, 30105), (669, 27945), (729, 25645), (1035, 18063), (1115, 16767), (1215, 15387), (1863, 10035), (2007, 9315), (3105, 6021), (3345, 5589), (3645, 5129)]