7721960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2719}}^1$

素因数の和:2801

約数の個数: 32

約数和(自身を含む): 17625600

約数和(自身を除く): 9903640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2719, 2840, 5438, 10876, 13595, 21752, 27190, 54380, 108760, 193049, 386098, 772196, 965245, 1544392, 1930490, 3860980, 7721960]

約数ペア:

[(1, 7721960), (2, 3860980), (4, 1930490), (5, 1544392), (8, 965245), (10, 772196), (20, 386098), (40, 193049), (71, 108760), (142, 54380), (284, 27190), (355, 21752), (568, 13595), (710, 10876), (1420, 5438), (2719, 2840)]