20956040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74843}}^1$

素因数の和:74861

約数の個数: 32

約数和(自身を含む): 53887680

約数和(自身を除く): 32931640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74843, 149686, 299372, 374215, 523901, 598744, 748430, 1047802, 1496860, 2095604, 2619505, 2993720, 4191208, 5239010, 10478020, 20956040]

約数ペア:

[(1, 20956040), (2, 10478020), (4, 5239010), (5, 4191208), (7, 2993720), (8, 2619505), (10, 2095604), (14, 1496860), (20, 1047802), (28, 748430), (35, 598744), (40, 523901), (56, 374215), (70, 299372), (140, 149686), (280, 74843)]