13221920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4861}}^1$

素因数の和:4893

約数の個数: 48

約数和(自身を含む): 33081048

約数和(自身を除く): 19859128

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 4861, 9722, 19444, 24305, 38888, 48610, 77776, 82637, 97220, 155552, 165274, 194440, 330548, 388880, 413185, 661096, 777760, 826370, 1322192, 1652740, 2644384, 3305480, 6610960, 13221920]

約数ペア:

[(1, 13221920), (2, 6610960), (4, 3305480), (5, 2644384), (8, 1652740), (10, 1322192), (16, 826370), (17, 777760), (20, 661096), (32, 413185), (34, 388880), (40, 330548), (68, 194440), (80, 165274), (85, 155552), (136, 97220), (160, 82637), (170, 77776), (272, 48610), (340, 38888), (544, 24305), (680, 19444), (1360, 9722), (2720, 4861)]