19781541

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7351}}^1$

素因数の和:7393

約数の個数: 24

約数和(自身を含む): 32113536

約数和(自身を除く): 12331995

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7351, 22053, 66159, 95563, 169073, 286689, 507219, 860067, 1521657, 2197949, 6593847, 19781541]

約数ペア:

[(1, 19781541), (3, 6593847), (9, 2197949), (13, 1521657), (23, 860067), (39, 507219), (69, 286689), (117, 169073), (207, 95563), (299, 66159), (897, 22053), (2691, 7351)]