18984620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6829}}^1$

素因数の和:6977

約数の個数: 24

約数和(自身を含む): 40160400

約数和(自身を除く): 21175780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6829, 13658, 27316, 34145, 68290, 136580, 949231, 1898462, 3796924, 4746155, 9492310, 18984620]

約数ペア:

[(1, 18984620), (2, 9492310), (4, 4746155), (5, 3796924), (10, 1898462), (20, 949231), (139, 136580), (278, 68290), (556, 34145), (695, 27316), (1390, 13658), (2780, 6829)]