19784045

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{1171}}^1$

素因数の和:1316

約数の個数: 16

約数和(自身を含む): 24752640

約数和(自身を除く): 4968595

約数列:

[1, 5, 31, 109, 155, 545, 1171, 3379, 5855, 16895, 36301, 127639, 181505, 638195, 3956809, 19784045]

約数ペア:

[(1, 19784045), (5, 3956809), (31, 638195), (109, 181505), (155, 127639), (545, 36301), (1171, 16895), (3379, 5855)]