21082789

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1439}}^1$

素因数の和:1489

約数の個数: 24

約数和(自身を含む): 27578880

約数和(自身を除く): 6496091

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1439, 2093, 10073, 14651, 18707, 33097, 70511, 130949, 231679, 430261, 916643, 1621753, 3011827, 21082789]

約数ペア:

[(1, 21082789), (7, 3011827), (13, 1621753), (23, 916643), (49, 430261), (91, 231679), (161, 130949), (299, 70511), (637, 33097), (1127, 18707), (1439, 14651), (2093, 10073)]