19908657

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 29728608

約数和(自身を除く): 9819951

約数列:

[1, 3, 9, 41, 123, 163, 331, 369, 489, 993, 1467, 2979, 6683, 13571, 20049, 40713, 53953, 60147, 122139, 161859, 485577, 2212073, 6636219, 19908657]

約数ペア:

[(1, 19908657), (3, 6636219), (9, 2212073), (41, 485577), (123, 161859), (163, 122139), (331, 60147), (369, 53953), (489, 40713), (993, 20049), (1467, 13571), (2979, 6683)]