1266821420

素因数分解:

$2^2\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{29311}}^1$

素因数の和:31481

約数の個数: 24

約数和(自身を含む): 2661646848

約数和(自身を除く): 1394825428

約数列:

[1, 2, 4, 5, 10, 20, 2161, 4322, 8644, 10805, 21610, 29311, 43220, 58622, 117244, 146555, 293110, 586220, 63341071, 126682142, 253364284, 316705355, 633410710, 1266821420]

約数ペア:

[(1, 1266821420), (2, 633410710), (4, 316705355), (5, 253364284), (10, 126682142), (20, 63341071), (2161, 586220), (4322, 293110), (8644, 146555), (10805, 117244), (21610, 58622), (29311, 43220)]