21978547

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 23874048

約数和(自身を除く): 1895501

約数列:

[1, 23, 43, 71, 313, 989, 1633, 3053, 7199, 13459, 22223, 70219, 309557, 511129, 955589, 21978547]

約数ペア:

[(1, 21978547), (23, 955589), (43, 511129), (71, 309557), (313, 70219), (989, 22223), (1633, 13459), (3053, 7199)]