19997107

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{431}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 22353408

約数和(自身を除く): 2356301

約数列:

[1, 13, 43, 83, 431, 559, 1079, 3569, 5603, 18533, 35773, 46397, 240929, 465049, 1538239, 19997107]

約数ペア:

[(1, 19997107), (13, 1538239), (43, 465049), (83, 240929), (431, 46397), (559, 35773), (1079, 18533), (3569, 5603)]