20884143

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 35113824

約数和(自身を除く): 14229681

約数列:

[1, 3, 7, 17, 21, 49, 51, 61, 119, 137, 147, 183, 357, 411, 427, 833, 959, 1037, 1281, 2329, 2499, 2877, 2989, 3111, 6713, 6987, 7259, 8357, 8967, 16303, 20139, 21777, 25071, 48909, 50813, 58499, 114121, 142069, 152439, 175497, 342363, 409493, 426207, 994483, 1228479, 2983449, 6961381, 20884143]

約数ペア:

[(1, 20884143), (3, 6961381), (7, 2983449), (17, 1228479), (21, 994483), (49, 426207), (51, 409493), (61, 342363), (119, 175497), (137, 152439), (147, 142069), (183, 114121), (357, 58499), (411, 50813), (427, 48909), (833, 25071), (959, 21777), (1037, 20139), (1281, 16303), (2329, 8967), (2499, 8357), (2877, 7259), (2989, 6987), (3111, 6713)]