28078305

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{739}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 47952000

約数和(自身を除く): 19873695

約数列:

[1, 3, 5, 15, 17, 51, 85, 149, 255, 447, 739, 745, 2217, 2235, 2533, 3695, 7599, 11085, 12563, 12665, 37689, 37995, 62815, 110111, 188445, 330333, 550555, 1651665, 1871887, 5615661, 9359435, 28078305]

約数ペア:

[(1, 28078305), (3, 9359435), (5, 5615661), (15, 1871887), (17, 1651665), (51, 550555), (85, 330333), (149, 188445), (255, 110111), (447, 62815), (739, 37995), (745, 37689), (2217, 12665), (2235, 12563), (2533, 11085), (3695, 7599)]