21103971

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 33374208

約数和(自身を除く): 12270237

約数列:

[1, 3, 7, 21, 41, 123, 127, 193, 287, 381, 579, 861, 889, 1351, 2667, 4053, 5207, 7913, 15621, 23739, 24511, 36449, 55391, 73533, 109347, 166173, 171577, 514731, 1004951, 3014853, 7034657, 21103971]

約数ペア:

[(1, 21103971), (3, 7034657), (7, 3014853), (21, 1004951), (41, 514731), (123, 171577), (127, 166173), (193, 109347), (287, 73533), (381, 55391), (579, 36449), (861, 24511), (889, 23739), (1351, 15621), (2667, 7913), (4053, 5207)]