19964721

素因数分解:

$3^1\times 7^1\times {\mathrm{733}}^1\times {\mathrm{1297}}^1$

素因数の和:2040

約数の個数: 16

約数和(自身を含む): 30487424

約数和(自身を除く): 10522703

約数列:

[1, 3, 7, 21, 733, 1297, 2199, 3891, 5131, 9079, 15393, 27237, 950701, 2852103, 6654907, 19964721]

約数ペア:

[(1, 19964721), (3, 6654907), (7, 2852103), (21, 950701), (733, 27237), (1297, 15393), (2199, 9079), (3891, 5131)]