20547891

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8363}}^1$

素因数の和:8392

約数の個数: 32

約数和(自身を含む): 37470720

約数和(自身を除く): 16922829

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8363, 25089, 58541, 75267, 108719, 175623, 225801, 326157, 526869, 761033, 978471, 1580607, 2283099, 2935413, 6849297, 20547891]

約数ペア:

[(1, 20547891), (3, 6849297), (7, 2935413), (9, 2283099), (13, 1580607), (21, 978471), (27, 761033), (39, 526869), (63, 326157), (91, 225801), (117, 175623), (189, 108719), (273, 75267), (351, 58541), (819, 25089), (2457, 8363)]