19812813

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1307}}^1$

素因数の和:1504

約数の個数: 16

約数和(自身を含む): 27457536

約数和(自身を除く): 7644723

約数列:

[1, 3, 31, 93, 163, 489, 1307, 3921, 5053, 15159, 40517, 121551, 213041, 639123, 6604271, 19812813]

約数ペア:

[(1, 19812813), (3, 6604271), (31, 639123), (93, 213041), (163, 121551), (489, 40517), (1307, 15159), (3921, 5053)]