20748075

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16273}}^1$

素因数の和:16303

約数の個数: 24

約数和(自身を含む): 36323568

約数和(自身を除く): 15575493

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16273, 48819, 81365, 244095, 276641, 406825, 829923, 1220475, 1383205, 4149615, 6916025, 20748075]

約数ペア:

[(1, 20748075), (3, 6916025), (5, 4149615), (15, 1383205), (17, 1220475), (25, 829923), (51, 406825), (75, 276641), (85, 244095), (255, 81365), (425, 48819), (1275, 16273)]