21443680

素因数分解:

$2^5\times 5^1\times {\mathrm{223}}^1\times {\mathrm{601}}^1$

素因数の和:839

約数の個数: 48

約数和(自身を含む): 50972544

約数和(自身を除く): 29528864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 223, 446, 601, 892, 1115, 1202, 1784, 2230, 2404, 3005, 3568, 4460, 4808, 6010, 7136, 8920, 9616, 12020, 17840, 19232, 24040, 35680, 48080, 96160, 134023, 268046, 536092, 670115, 1072184, 1340230, 2144368, 2680460, 4288736, 5360920, 10721840, 21443680]

約数ペア:

[(1, 21443680), (2, 10721840), (4, 5360920), (5, 4288736), (8, 2680460), (10, 2144368), (16, 1340230), (20, 1072184), (32, 670115), (40, 536092), (80, 268046), (160, 134023), (223, 96160), (446, 48080), (601, 35680), (892, 24040), (1115, 19232), (1202, 17840), (1784, 12020), (2230, 9616), (2404, 8920), (3005, 7136), (3568, 6010), (4460, 4808)]