20989530

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25913}}^1$

素因数の和:25932

約数の個数: 40

約数和(自身を含む): 56440692

約数和(自身を除く): 35451162

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25913, 51826, 77739, 129565, 155478, 233217, 259130, 388695, 466434, 699651, 777390, 1166085, 1399302, 2098953, 2332170, 3498255, 4197906, 6996510, 10494765, 20989530]

約数ペア:

[(1, 20989530), (2, 10494765), (3, 6996510), (5, 4197906), (6, 3498255), (9, 2332170), (10, 2098953), (15, 1399302), (18, 1166085), (27, 777390), (30, 699651), (45, 466434), (54, 388695), (81, 259130), (90, 233217), (135, 155478), (162, 129565), (270, 77739), (405, 51826), (810, 25913)]