21465717

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1373

約数の個数: 32

約数和(自身を含む): 35831040

約数和(自身を除く): 14365323

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1289, 2379, 3867, 5551, 9023, 16653, 16757, 27069, 50271, 78629, 117299, 235887, 351897, 550403, 1022177, 1651209, 3066531, 7155239, 21465717]

約数ペア:

[(1, 21465717), (3, 7155239), (7, 3066531), (13, 1651209), (21, 1022177), (39, 550403), (61, 351897), (91, 235887), (183, 117299), (273, 78629), (427, 50271), (793, 27069), (1281, 16757), (1289, 16653), (2379, 9023), (3867, 5551)]