20740239

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1597}}^1$

素因数の和:1656

約数の個数: 32

約数和(自身を含む): 34005440

約数和(自身を除く): 13265201

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 333, 351, 481, 999, 1443, 1597, 4329, 4791, 12987, 14373, 20761, 43119, 59089, 62283, 177267, 186849, 531801, 560547, 768157, 1595403, 2304471, 6913413, 20740239]

約数ペア:

[(1, 20740239), (3, 6913413), (9, 2304471), (13, 1595403), (27, 768157), (37, 560547), (39, 531801), (111, 186849), (117, 177267), (333, 62283), (351, 59089), (481, 43119), (999, 20761), (1443, 14373), (1597, 12987), (4329, 4791)]