20888973640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4791049}}^1$

素因数の和:4791169

約数の個数: 32

約数和(自身を含む): 47431395000

約数和(自身を除く): 26542421360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4791049, 9582098, 19164196, 23955245, 38328392, 47910490, 95820980, 191641960, 522224341, 1044448682, 2088897364, 2611121705, 4177794728, 5222243410, 10444486820, 20888973640]

約数ペア:

[(1, 20888973640), (2, 10444486820), (4, 5222243410), (5, 4177794728), (8, 2611121705), (10, 2088897364), (20, 1044448682), (40, 522224341), (109, 191641960), (218, 95820980), (436, 47910490), (545, 38328392), (872, 23955245), (1090, 19164196), (2180, 9582098), (4360, 4791049)]