18640349

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10781}}^1$

素因数の和:10820

約数の個数: 16

約数和(自身を含む): 24151680

約数和(自身を除く): 5511331

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 10781, 75467, 140153, 204839, 981071, 1433873, 2662907, 18640349]

約数ペア:

[(1, 18640349), (7, 2662907), (13, 1433873), (19, 981071), (91, 204839), (133, 140153), (247, 75467), (1729, 10781)]