79741520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:324

約数の個数: 80

約数和(自身を含む): 191237760

約数和(自身を除く): 111496240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 101, 139, 142, 202, 278, 284, 355, 404, 505, 556, 568, 695, 710, 808, 1010, 1112, 1136, 1390, 1420, 1616, 2020, 2224, 2780, 2840, 4040, 5560, 5680, 7171, 8080, 9869, 11120, 14039, 14342, 19738, 28078, 28684, 35855, 39476, 49345, 56156, 57368, 70195, 71710, 78952, 98690, 112312, 114736, 140390, 143420, 157904, 197380, 224624, 280780, 286840, 394760, 561560, 573680, 789520, 996769, 1123120, 1993538, 3987076, 4983845, 7974152, 9967690, 15948304, 19935380, 39870760, 79741520]

約数ペア:

[(1, 79741520), (2, 39870760), (4, 19935380), (5, 15948304), (8, 9967690), (10, 7974152), (16, 4983845), (20, 3987076), (40, 1993538), (71, 1123120), (80, 996769), (101, 789520), (139, 573680), (142, 561560), (202, 394760), (278, 286840), (284, 280780), (355, 224624), (404, 197380), (505, 157904), (556, 143420), (568, 140390), (695, 114736), (710, 112312), (808, 98690), (1010, 78952), (1112, 71710), (1136, 70195), (1390, 57368), (1420, 56156), (1616, 49345), (2020, 39476), (2224, 35855), (2780, 28684), (2840, 28078), (4040, 19738), (5560, 14342), (5680, 14039), (7171, 11120), (8080, 9869)]