19780449

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{16361}}^1$

素因数の和:16408

約数の個数: 16

約数和(自身を含む): 29320704

約数和(自身を除く): 9540255

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 16361, 49083, 212693, 507191, 638079, 1521573, 6593483, 19780449]

約数ペア:

[(1, 19780449), (3, 6593483), (13, 1521573), (31, 638079), (39, 507191), (93, 212693), (403, 49083), (1209, 16361)]