18991973

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18973}}^1$

素因数の和:19004

約数の個数: 16

約数和(自身を含む): 25501056

約数和(自身を除く): 6509083

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 18973, 132811, 208703, 246649, 1460921, 1726543, 2713139, 18991973]

約数ペア:

[(1, 18991973), (7, 2713139), (11, 1726543), (13, 1460921), (77, 246649), (91, 208703), (143, 132811), (1001, 18973)]