21645165

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2927}}^1$

素因数の和:2981

約数の個数: 32

約数和(自身を含む): 37946880

約数和(自身を除く): 16301715

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2927, 7395, 8781, 14635, 43905, 49759, 84883, 149277, 248795, 254649, 424415, 746385, 1273245, 1443011, 4329033, 7215055, 21645165]

約数ペア:

[(1, 21645165), (3, 7215055), (5, 4329033), (15, 1443011), (17, 1273245), (29, 746385), (51, 424415), (85, 254649), (87, 248795), (145, 149277), (255, 84883), (435, 49759), (493, 43905), (1479, 14635), (2465, 8781), (2927, 7395)]