21254470

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49429}}^1$

素因数の和:49479

約数の個数: 16

約数和(自身を含む): 39148560

約数和(自身を除く): 17894090

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49429, 98858, 247145, 494290, 2125447, 4250894, 10627235, 21254470]

約数ペア:

[(1, 21254470), (2, 10627235), (5, 4250894), (10, 2125447), (43, 494290), (86, 247145), (215, 98858), (430, 49429)]