21368745

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9311}}^1$

素因数の和:9342

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 18859095

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9311, 27933, 46555, 83799, 139665, 158287, 251397, 418995, 474861, 791435, 1256985, 1424583, 2374305, 4273749, 7122915, 21368745]

約数ペア:

[(1, 21368745), (3, 7122915), (5, 4273749), (9, 2374305), (15, 1424583), (17, 1256985), (27, 791435), (45, 474861), (51, 418995), (85, 251397), (135, 158287), (153, 139665), (255, 83799), (459, 46555), (765, 27933), (2295, 9311)]