21041440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18787}}^1$

素因数の和:18809

約数の個数: 48

約数和(自身を含む): 56814912

約数和(自身を除く): 35773472

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, 1120, 18787, 37574, 75148, 93935, 131509, 150296, 187870, 263018, 300592, 375740, 526036, 601184, 657545, 751480, 1052072, 1315090, 1502960, 2104144, 2630180, 3005920, 4208288, 5260360, 10520720, 21041440]

約数ペア:

[(1, 21041440), (2, 10520720), (4, 5260360), (5, 4208288), (7, 3005920), (8, 2630180), (10, 2104144), (14, 1502960), (16, 1315090), (20, 1052072), (28, 751480), (32, 657545), (35, 601184), (40, 526036), (56, 375740), (70, 300592), (80, 263018), (112, 187870), (140, 150296), (160, 131509), (224, 93935), (280, 75148), (560, 37574), (1120, 18787)]