18795580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6761}}^1$

素因数の和:6909

約数の個数: 24

約数和(自身を含む): 39760560

約数和(自身を除く): 20964980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6761, 13522, 27044, 33805, 67610, 135220, 939779, 1879558, 3759116, 4698895, 9397790, 18795580]

約数ペア:

[(1, 18795580), (2, 9397790), (4, 4698895), (5, 3759116), (10, 1879558), (20, 939779), (139, 135220), (278, 67610), (556, 33805), (695, 27044), (1390, 13522), (2780, 6761)]