18378495

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1973}}^1$

素因数の和:2013

約数の個数: 40

約数和(自身を含む): 34394976

約数和(自身を除く): 16016481

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 1973, 3105, 5919, 9315, 9865, 17757, 29595, 45379, 53271, 88785, 136137, 159813, 226895, 266355, 408411, 680685, 799065, 1225233, 2042055, 3675699, 6126165, 18378495]

約数ペア:

[(1, 18378495), (3, 6126165), (5, 3675699), (9, 2042055), (15, 1225233), (23, 799065), (27, 680685), (45, 408411), (69, 266355), (81, 226895), (115, 159813), (135, 136137), (207, 88785), (345, 53271), (405, 45379), (621, 29595), (1035, 17757), (1863, 9865), (1973, 9315), (3105, 5919)]