18995949

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4943}}^1$

素因数の和:5017

約数の個数: 24

約数和(自身を含む): 31878912

約数和(自身を除く): 12882963

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 4943, 14829, 34601, 44487, 103803, 301523, 311409, 904569, 2110661, 2713707, 6331983, 18995949]

約数ペア:

[(1, 18995949), (3, 6331983), (7, 2713707), (9, 2110661), (21, 904569), (61, 311409), (63, 301523), (183, 103803), (427, 44487), (549, 34601), (1281, 14829), (3843, 4943)]