18221193

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{7757}}^1$

素因数の和:7798

約数の個数: 20

約数和(自身を含む): 28161540

約数和(自身を除く): 9940347

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 7757, 23271, 69813, 209439, 224953, 628317, 674859, 2024577, 6073731, 18221193]

約数ペア:

[(1, 18221193), (3, 6073731), (9, 2024577), (27, 674859), (29, 628317), (81, 224953), (87, 209439), (261, 69813), (783, 23271), (2349, 7757)]