20785520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37117}}^1$

素因数の和:37137

約数の個数: 40

約数和(自身を含む): 55231584

約数和(自身を除く): 34446064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37117, 74234, 148468, 185585, 259819, 296936, 371170, 519638, 593872, 742340, 1039276, 1299095, 1484680, 2078552, 2598190, 2969360, 4157104, 5196380, 10392760, 20785520]

約数ペア:

[(1, 20785520), (2, 10392760), (4, 5196380), (5, 4157104), (7, 2969360), (8, 2598190), (10, 2078552), (14, 1484680), (16, 1299095), (20, 1039276), (28, 742340), (35, 593872), (40, 519638), (56, 371170), (70, 296936), (80, 259819), (112, 185585), (140, 148468), (280, 74234), (560, 37117)]