20786355

素因数分解:

$3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1439}}^1$

素因数の和:1560

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 16538445

約数列:

[1, 3, 5, 9, 15, 27, 45, 107, 135, 321, 535, 963, 1439, 1605, 2889, 4317, 4815, 7195, 12951, 14445, 21585, 38853, 64755, 153973, 194265, 461919, 769865, 1385757, 2309595, 4157271, 6928785, 20786355]

約数ペア:

[(1, 20786355), (3, 6928785), (5, 4157271), (9, 2309595), (15, 1385757), (27, 769865), (45, 461919), (107, 194265), (135, 153973), (321, 64755), (535, 38853), (963, 21585), (1439, 14445), (1605, 12951), (2889, 7195), (4317, 4815)]