21074475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16529}}^1$

素因数の和:16559

約数の個数: 24

約数和(自身を含む): 36894960

約数和(自身を除く): 15820485

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16529, 49587, 82645, 247935, 280993, 413225, 842979, 1239675, 1404965, 4214895, 7024825, 21074475]

約数ペア:

[(1, 21074475), (3, 7024825), (5, 4214895), (15, 1404965), (17, 1239675), (25, 842979), (51, 413225), (75, 280993), (85, 247935), (255, 82645), (425, 49587), (1275, 16529)]