20508780579

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2297}}^1\times {\mathrm{11491}}^1$

素因数の和:13835

約数の個数: 32

約数和(自身を含む): 32112877056

約数和(自身を除く): 11604096477

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 2297, 6891, 11491, 16079, 34473, 48237, 80437, 84989, 241311, 254967, 425167, 594923, 1275501, 1784769, 2976169, 8928507, 26394827, 79184481, 184763789, 554291367, 976608599, 2929825797, 6836260193, 20508780579]

約数ペア:

[(1, 20508780579), (3, 6836260193), (7, 2929825797), (21, 976608599), (37, 554291367), (111, 184763789), (259, 79184481), (777, 26394827), (2297, 8928507), (6891, 2976169), (11491, 1784769), (16079, 1275501), (34473, 594923), (48237, 425167), (80437, 254967), (84989, 241311)]