20921232685

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{839}}^1\times {\mathrm{115981}}^1$

素因数の和:116868

約数の個数: 16

約数和(自身を含む): 25720168320

約数和(自身を除く): 4798935635

約数列:

[1, 5, 43, 215, 839, 4195, 36077, 115981, 180385, 579905, 4987183, 24935915, 97308059, 486540295, 4184246537, 20921232685]

約数ペア:

[(1, 20921232685), (5, 4184246537), (43, 486540295), (215, 97308059), (839, 24935915), (4195, 4987183), (36077, 579905), (115981, 180385)]