2108807920

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{2671}}^1$

素因数の和:2894

約数の個数: 80

約数和(自身を含む): 5009679360

約数和(自身を除く): 2900871440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 139, 142, 278, 284, 355, 556, 568, 695, 710, 1112, 1136, 1390, 1420, 2224, 2671, 2780, 2840, 5342, 5560, 5680, 9869, 10684, 11120, 13355, 19738, 21368, 26710, 39476, 42736, 49345, 53420, 78952, 98690, 106840, 157904, 189641, 197380, 213680, 371269, 379282, 394760, 742538, 758564, 789520, 948205, 1485076, 1517128, 1856345, 1896410, 2970152, 3034256, 3712690, 3792820, 5940304, 7425380, 7585640, 14850760, 15171280, 26360099, 29701520, 52720198, 105440396, 131800495, 210880792, 263600990, 421761584, 527201980, 1054403960, 2108807920]

約数ペア:

[(1, 2108807920), (2, 1054403960), (4, 527201980), (5, 421761584), (8, 263600990), (10, 210880792), (16, 131800495), (20, 105440396), (40, 52720198), (71, 29701520), (80, 26360099), (139, 15171280), (142, 14850760), (278, 7585640), (284, 7425380), (355, 5940304), (556, 3792820), (568, 3712690), (695, 3034256), (710, 2970152), (1112, 1896410), (1136, 1856345), (1390, 1517128), (1420, 1485076), (2224, 948205), (2671, 789520), (2780, 758564), (2840, 742538), (5342, 394760), (5560, 379282), (5680, 371269), (9869, 213680), (10684, 197380), (11120, 189641), (13355, 157904), (19738, 106840), (21368, 98690), (26710, 78952), (39476, 53420), (42736, 49345)]