21376040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76343}}^1$

素因数の和:76361

約数の個数: 32

約数和(自身を含む): 54967680

約数和(自身を除く): 33591640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76343, 152686, 305372, 381715, 534401, 610744, 763430, 1068802, 1526860, 2137604, 2672005, 3053720, 4275208, 5344010, 10688020, 21376040]

約数ペア:

[(1, 21376040), (2, 10688020), (4, 5344010), (5, 4275208), (7, 3053720), (8, 2672005), (10, 2137604), (14, 1526860), (20, 1068802), (28, 763430), (35, 610744), (40, 534401), (56, 381715), (70, 305372), (140, 152686), (280, 76343)]