640695

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{353}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 1129968

約数和(自身を除く): 489273

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 353, 363, 605, 1059, 1765, 1815, 3883, 5295, 11649, 19415, 42713, 58245, 128139, 213565, 640695]

約数ペア:

[(1, 640695), (3, 213565), (5, 128139), (11, 58245), (15, 42713), (33, 19415), (55, 11649), (121, 5295), (165, 3883), (353, 1815), (363, 1765), (605, 1059)]