18091475

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:319

約数の個数: 24

約数和(自身を含む): 23302080

約数和(自身を除く): 5210605

約数列:

[1, 5, 25, 47, 89, 173, 235, 445, 865, 1175, 2225, 4183, 4325, 8131, 15397, 20915, 40655, 76985, 104575, 203275, 384925, 723659, 3618295, 18091475]

約数ペア:

[(1, 18091475), (5, 3618295), (25, 723659), (47, 384925), (89, 203275), (173, 104575), (235, 76985), (445, 40655), (865, 20915), (1175, 15397), (2225, 8131), (4183, 4325)]