21372825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16763}}^1$

素因数の和:16793

約数の個数: 24

約数和(自身を含む): 37417248

約数和(自身を除く): 16044423

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16763, 50289, 83815, 251445, 284971, 419075, 854913, 1257225, 1424855, 4274565, 7124275, 21372825]

約数ペア:

[(1, 21372825), (3, 7124275), (5, 4274565), (15, 1424855), (17, 1257225), (25, 854913), (51, 419075), (75, 284971), (85, 251445), (255, 83815), (425, 50289), (1275, 16763)]