21153215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1\times {\mathrm{439}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5457985

約数列:

[1, 5, 23, 115, 419, 439, 2095, 2195, 9637, 10097, 48185, 50485, 183941, 919705, 4230643, 21153215]

約数ペア:

[(1, 21153215), (5, 4230643), (23, 919705), (115, 183941), (419, 50485), (439, 48185), (2095, 10097), (2195, 9637)]