789520

素因数分解:

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

素因数の和:223

約数の個数: 40

約数和(自身を含む): 1874880

約数和(自身を除く): 1085360

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, 2780, 2840, 5560, 5680, 9869, 11120, 19738, 39476, 49345, 78952, 98690, 157904, 197380, 394760, 789520]

約数ペア:

[(1, 789520), (2, 394760), (4, 197380), (5, 157904), (8, 98690), (10, 78952), (16, 49345), (20, 39476), (40, 19738), (71, 11120), (80, 9869), (139, 5680), (142, 5560), (278, 2840), (284, 2780), (355, 2224), (556, 1420), (568, 1390), (695, 1136), (710, 1112)]