20897635

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 28553472

約数和(自身を除く): 7655837

約数列:

[1, 5, 11, 53, 55, 67, 107, 265, 335, 535, 583, 737, 1177, 2915, 3551, 3685, 5671, 5885, 7169, 17755, 28355, 35845, 39061, 62381, 78859, 195305, 311905, 379957, 394295, 1899785, 4179527, 20897635]

約数ペア:

[(1, 20897635), (5, 4179527), (11, 1899785), (53, 394295), (55, 379957), (67, 311905), (107, 195305), (265, 78859), (335, 62381), (535, 39061), (583, 35845), (737, 28355), (1177, 17755), (2915, 7169), (3551, 5885), (3685, 5671)]