20211496

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{499}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 39060000

約数和(自身を除く): 18848504

約数列:

[1, 2, 4, 8, 61, 83, 122, 166, 244, 332, 488, 499, 664, 998, 1996, 3992, 5063, 10126, 20252, 30439, 40504, 41417, 60878, 82834, 121756, 165668, 243512, 331336, 2526437, 5052874, 10105748, 20211496]

約数ペア:

[(1, 20211496), (2, 10105748), (4, 5052874), (8, 2526437), (61, 331336), (83, 243512), (122, 165668), (166, 121756), (244, 82834), (332, 60878), (488, 41417), (499, 40504), (664, 30439), (998, 20252), (1996, 10126), (3992, 5063)]