21082125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3307}}^1$

素因数の和:3342

約数の個数: 32

約数和(自身を含む): 37155456

約数和(自身を除く): 16073331

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3307, 6375, 9921, 16535, 49605, 56219, 82675, 168657, 248025, 281095, 413375, 843285, 1240125, 1405475, 4216425, 7027375, 21082125]

約数ペア:

[(1, 21082125), (3, 7027375), (5, 4216425), (15, 1405475), (17, 1240125), (25, 843285), (51, 413375), (75, 281095), (85, 248025), (125, 168657), (255, 82675), (375, 56219), (425, 49605), (1275, 16535), (2125, 9921), (3307, 6375)]