131218640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{234319}}^1$

素因数の和:234339

約数の個数: 40

約数和(自身を含む): 348668160

約数和(自身を除く): 217449520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 234319, 468638, 937276, 1171595, 1640233, 1874552, 2343190, 3280466, 3749104, 4686380, 6560932, 8201165, 9372760, 13121864, 16402330, 18745520, 26243728, 32804660, 65609320, 131218640]

約数ペア:

[(1, 131218640), (2, 65609320), (4, 32804660), (5, 26243728), (7, 18745520), (8, 16402330), (10, 13121864), (14, 9372760), (16, 8201165), (20, 6560932), (28, 4686380), (35, 3749104), (40, 3280466), (56, 2343190), (70, 1874552), (80, 1640233), (112, 1171595), (140, 937276), (280, 468638), (560, 234319)]