20722140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115123}}^1$

素因数の和:115138

約数の個数: 36

約数和(自身を含む): 62857704

約数和(自身を除く): 42135564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115123, 230246, 345369, 460492, 575615, 690738, 1036107, 1151230, 1381476, 1726845, 2072214, 2302460, 3453690, 4144428, 5180535, 6907380, 10361070, 20722140]

約数ペア:

[(1, 20722140), (2, 10361070), (3, 6907380), (4, 5180535), (5, 4144428), (6, 3453690), (9, 2302460), (10, 2072214), (12, 1726845), (15, 1381476), (18, 1151230), (20, 1036107), (30, 690738), (36, 575615), (45, 460492), (60, 345369), (90, 230246), (180, 115123)]