20918580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{348643}}^1$

素因数の和:348655

約数の個数: 24

約数和(自身を含む): 58572192

約数和(自身を除く): 37653612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 348643, 697286, 1045929, 1394572, 1743215, 2091858, 3486430, 4183716, 5229645, 6972860, 10459290, 20918580]

約数ペア:

[(1, 20918580), (2, 10459290), (3, 6972860), (4, 5229645), (5, 4183716), (6, 3486430), (10, 2091858), (12, 1743215), (15, 1394572), (20, 1045929), (30, 697286), (60, 348643)]