18080415

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 33965568

約数和(自身を除く): 15885153

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 647, 1035, 1215, 1863, 1941, 3105, 3235, 5589, 5823, 9315, 9705, 14881, 17469, 27945, 29115, 44643, 52407, 74405, 87345, 133929, 157221, 223215, 262035, 401787, 669645, 786105, 1205361, 2008935, 3616083, 6026805, 18080415]

約数ペア:

[(1, 18080415), (3, 6026805), (5, 3616083), (9, 2008935), (15, 1205361), (23, 786105), (27, 669645), (45, 401787), (69, 262035), (81, 223215), (115, 157221), (135, 133929), (207, 87345), (243, 74405), (345, 52407), (405, 44643), (621, 29115), (647, 27945), (1035, 17469), (1215, 14881), (1863, 9705), (1941, 9315), (3105, 5823), (3235, 5589)]