20721060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115117}}^1$

素因数の和:115132

約数の個数: 36

約数和(自身を含む): 62854428

約数和(自身を除く): 42133368

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115117, 230234, 345351, 460468, 575585, 690702, 1036053, 1151170, 1381404, 1726755, 2072106, 2302340, 3453510, 4144212, 5180265, 6907020, 10360530, 20721060]

約数ペア:

[(1, 20721060), (2, 10360530), (3, 6907020), (4, 5180265), (5, 4144212), (6, 3453510), (9, 2302340), (10, 2072106), (12, 1726755), (15, 1381404), (18, 1151170), (20, 1036053), (30, 690702), (36, 575585), (45, 460468), (60, 345351), (90, 230234), (180, 115117)]