19720635

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1117}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 34774272

約数和(自身を除く): 15053637

約数列:

[1, 3, 5, 11, 15, 33, 55, 107, 165, 321, 535, 1117, 1177, 1605, 3351, 3531, 5585, 5885, 12287, 16755, 17655, 36861, 61435, 119519, 184305, 358557, 597595, 1314709, 1792785, 3944127, 6573545, 19720635]

約数ペア:

[(1, 19720635), (3, 6573545), (5, 3944127), (11, 1792785), (15, 1314709), (33, 597595), (55, 358557), (107, 184305), (165, 119519), (321, 61435), (535, 36861), (1117, 17655), (1177, 16755), (1605, 12287), (3351, 5885), (3531, 5585)]