21401530

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{701}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 40030848

約数和(自身を除く): 18629318

約数列:

[1, 2, 5, 10, 43, 71, 86, 142, 215, 355, 430, 701, 710, 1402, 3053, 3505, 6106, 7010, 15265, 30143, 30530, 49771, 60286, 99542, 150715, 248855, 301430, 497710, 2140153, 4280306, 10700765, 21401530]

約数ペア:

[(1, 21401530), (2, 10700765), (5, 4280306), (10, 2140153), (43, 497710), (71, 301430), (86, 248855), (142, 150715), (215, 99542), (355, 60286), (430, 49771), (701, 30530), (710, 30143), (1402, 15265), (3053, 7010), (3505, 6106)]