21909007868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2781743}}^1$

素因数の和:2781937

約数の個数: 24

約数和(自身を含む): 42059969280

約数和(自身を除く): 20150961412

約数列:

[1, 2, 4, 11, 22, 44, 179, 358, 716, 1969, 3938, 7876, 2781743, 5563486, 11126972, 30599173, 61198346, 122396692, 497931997, 995863994, 1991727988, 5477251967, 10954503934, 21909007868]

約数ペア:

[(1, 21909007868), (2, 10954503934), (4, 5477251967), (11, 1991727988), (22, 995863994), (44, 497931997), (179, 122396692), (358, 61198346), (716, 30599173), (1969, 11126972), (3938, 5563486), (7876, 2781743)]