18956987

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1381}}^1$

素因数の和:1478

約数の個数: 16

約数和(自身を含む): 22686912

約数和(自身を除く): 3729925

約数列:

[1, 7, 37, 53, 259, 371, 1381, 1961, 9667, 13727, 51097, 73193, 357679, 512351, 2708141, 18956987]

約数ペア:

[(1, 18956987), (7, 2708141), (37, 512351), (53, 357679), (259, 73193), (371, 51097), (1381, 13727), (1961, 9667)]