881440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{787}}^1$

素因数の和:809

約数の個数: 48

約数和(自身を含む): 2382912

約数和(自身を除く): 1501472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 787, 1120, 1574, 3148, 3935, 5509, 6296, 7870, 11018, 12592, 15740, 22036, 25184, 27545, 31480, 44072, 55090, 62960, 88144, 110180, 125920, 176288, 220360, 440720, 881440]

約数ペア:

[(1, 881440), (2, 440720), (4, 220360), (5, 176288), (7, 125920), (8, 110180), (10, 88144), (14, 62960), (16, 55090), (20, 44072), (28, 31480), (32, 27545), (35, 25184), (40, 22036), (56, 15740), (70, 12592), (80, 11018), (112, 7870), (140, 6296), (160, 5509), (224, 3935), (280, 3148), (560, 1574), (787, 1120)]