21372395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{743}}^1$

素因数の和:1282

約数の個数: 16

約数和(自身を含む): 28069632

約数和(自身を除く): 6697237

約数列:

[1, 5, 11, 55, 523, 743, 2615, 3715, 5753, 8173, 28765, 40865, 388589, 1942945, 4274479, 21372395]

約数ペア:

[(1, 21372395), (5, 4274479), (11, 1942945), (55, 388589), (523, 40865), (743, 28765), (2615, 8173), (3715, 5753)]