19980767

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:382

約数の個数: 16

約数和(自身を含む): 21669120

約数和(自身を除く): 1688353

約数列:

[1, 23, 43, 89, 227, 989, 2047, 3827, 5221, 9761, 20203, 88021, 224503, 464669, 868729, 19980767]

約数ペア:

[(1, 19980767), (23, 868729), (43, 464669), (89, 224503), (227, 88021), (989, 20203), (2047, 9761), (3827, 5221)]