18840289

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 22030272

約数和(自身を除く): 3189983

約数列:

[1, 13, 23, 37, 131, 169, 299, 481, 851, 1703, 3013, 3887, 4847, 6253, 11063, 22139, 39169, 63011, 111481, 143819, 509197, 819143, 1449253, 18840289]

約数ペア:

[(1, 18840289), (13, 1449253), (23, 819143), (37, 509197), (131, 143819), (169, 111481), (299, 63011), (481, 39169), (851, 22139), (1703, 11063), (3013, 6253), (3887, 4847)]