13820989

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{1669}}^1$

素因数の和:1709

約数の個数: 18

約数和(自身を含む): 17419770

約数和(自身を除く): 3598781

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 1669, 8281, 11683, 21697, 81781, 151879, 282061, 1063153, 1974427, 13820989]

約数ペア:

[(1, 13820989), (7, 1974427), (13, 1063153), (49, 282061), (91, 151879), (169, 81781), (637, 21697), (1183, 11683), (1669, 8281)]