21273012

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{919}}^1$

素因数の和:1572

約数の個数: 36

約数和(自身を含む): 53915680

約数和(自身を除く): 32642668

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 919, 1286, 1838, 1929, 2572, 2757, 3676, 3858, 5514, 5787, 7716, 8271, 11028, 11574, 16542, 23148, 33084, 590917, 1181834, 1772751, 2363668, 3545502, 5318253, 7091004, 10636506, 21273012]

約数ペア:

[(1, 21273012), (2, 10636506), (3, 7091004), (4, 5318253), (6, 3545502), (9, 2363668), (12, 1772751), (18, 1181834), (36, 590917), (643, 33084), (919, 23148), (1286, 16542), (1838, 11574), (1929, 11028), (2572, 8271), (2757, 7716), (3676, 5787), (3858, 5514)]