20749239

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 36429120

約数和(自身を除く): 15679881

約数列:

[1, 3, 7, 9, 21, 29, 41, 63, 87, 123, 203, 261, 277, 287, 369, 609, 831, 861, 1189, 1827, 1939, 2493, 2583, 3567, 5817, 8033, 8323, 10701, 11357, 17451, 24099, 24969, 34071, 56231, 72297, 74907, 79499, 102213, 168693, 238497, 329353, 506079, 715491, 988059, 2305471, 2964177, 6916413, 20749239]

約数ペア:

[(1, 20749239), (3, 6916413), (7, 2964177), (9, 2305471), (21, 988059), (29, 715491), (41, 506079), (63, 329353), (87, 238497), (123, 168693), (203, 102213), (261, 79499), (277, 74907), (287, 72297), (369, 56231), (609, 34071), (831, 24969), (861, 24099), (1189, 17451), (1827, 11357), (1939, 10701), (2493, 8323), (2583, 8033), (3567, 5817)]