18641440

素因数分解:

$2^5\times 5^1\times {\mathrm{263}}^1\times {\mathrm{443}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 44307648

約数和(自身を除く): 25666208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 263, 443, 526, 886, 1052, 1315, 1772, 2104, 2215, 2630, 3544, 4208, 4430, 5260, 7088, 8416, 8860, 10520, 14176, 17720, 21040, 35440, 42080, 70880, 116509, 233018, 466036, 582545, 932072, 1165090, 1864144, 2330180, 3728288, 4660360, 9320720, 18641440]

約数ペア:

[(1, 18641440), (2, 9320720), (4, 4660360), (5, 3728288), (8, 2330180), (10, 1864144), (16, 1165090), (20, 932072), (32, 582545), (40, 466036), (80, 233018), (160, 116509), (263, 70880), (443, 42080), (526, 35440), (886, 21040), (1052, 17720), (1315, 14176), (1772, 10520), (2104, 8860), (2215, 8416), (2630, 7088), (3544, 5260), (4208, 4430)]