21278580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354643}}^1$

素因数の和:354655

約数の個数: 24

約数和(自身を含む): 59580192

約数和(自身を除く): 38301612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354643, 709286, 1063929, 1418572, 1773215, 2127858, 3546430, 4255716, 5319645, 7092860, 10639290, 21278580]

約数ペア:

[(1, 21278580), (2, 10639290), (3, 7092860), (4, 5319645), (5, 4255716), (6, 3546430), (10, 2127858), (12, 1773215), (15, 1418572), (20, 1063929), (30, 709286), (60, 354643)]