21672915

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11941}}^1$

素因数の和:11971

約数の個数: 24

約数和(自身を含む): 38118864

約数和(自身を除く): 16445949

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11941, 35823, 59705, 131351, 179115, 394053, 656755, 1444861, 1970265, 4334583, 7224305, 21672915]

約数ペア:

[(1, 21672915), (3, 7224305), (5, 4334583), (11, 1970265), (15, 1444861), (33, 656755), (55, 394053), (121, 179115), (165, 131351), (363, 59705), (605, 35823), (1815, 11941)]