18078940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2221}}^1$

素因数の和:2278

約数の個数: 48

約数和(自身を含む): 42555744

約数和(自身を除く): 24476804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2221, 4070, 4442, 8140, 8884, 11105, 22210, 24431, 44420, 48862, 82177, 97724, 122155, 164354, 244310, 328708, 410885, 488620, 821770, 903947, 1643540, 1807894, 3615788, 4519735, 9039470, 18078940]

約数ペア:

[(1, 18078940), (2, 9039470), (4, 4519735), (5, 3615788), (10, 1807894), (11, 1643540), (20, 903947), (22, 821770), (37, 488620), (44, 410885), (55, 328708), (74, 244310), (110, 164354), (148, 122155), (185, 97724), (220, 82177), (370, 48862), (407, 44420), (740, 24431), (814, 22210), (1628, 11105), (2035, 8884), (2221, 8140), (4070, 4442)]