20340040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72643}}^1$

素因数の和:72661

約数の個数: 32

約数和(自身を含む): 52303680

約数和(自身を除く): 31963640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72643, 145286, 290572, 363215, 508501, 581144, 726430, 1017002, 1452860, 2034004, 2542505, 2905720, 4068008, 5085010, 10170020, 20340040]

約数ペア:

[(1, 20340040), (2, 10170020), (4, 5085010), (5, 4068008), (7, 2905720), (8, 2542505), (10, 2034004), (14, 1452860), (20, 1017002), (28, 726430), (35, 581144), (40, 508501), (56, 363215), (70, 290572), (140, 145286), (280, 72643)]