21852765

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 41760576

約数和(自身を除く): 19907811

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 131, 165, 337, 393, 495, 655, 1011, 1179, 1441, 1685, 1965, 3033, 3707, 4323, 5055, 5895, 7205, 11121, 12969, 15165, 18535, 21615, 33363, 44147, 55605, 64845, 132441, 166815, 220735, 397323, 485617, 662205, 1456851, 1986615, 2428085, 4370553, 7284255, 21852765]

約数ペア:

[(1, 21852765), (3, 7284255), (5, 4370553), (9, 2428085), (11, 1986615), (15, 1456851), (33, 662205), (45, 485617), (55, 397323), (99, 220735), (131, 166815), (165, 132441), (337, 64845), (393, 55605), (495, 44147), (655, 33363), (1011, 21615), (1179, 18535), (1441, 15165), (1685, 12969), (1965, 11121), (3033, 7205), (3707, 5895), (4323, 5055)]