28778025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{22571}}^1$

素因数の和:22601

約数の個数: 24

約数和(自身を含む): 50380704

約数和(自身を除く): 21602679

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 22571, 67713, 112855, 338565, 383707, 564275, 1151121, 1692825, 1918535, 5755605, 9592675, 28778025]

約数ペア:

[(1, 28778025), (3, 9592675), (5, 5755605), (15, 1918535), (17, 1692825), (25, 1151121), (51, 564275), (75, 383707), (85, 338565), (255, 112855), (425, 67713), (1275, 22571)]