278700560

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 663707520

約数和(自身を除く): 385006960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 139, 142, 278, 284, 353, 355, 556, 568, 695, 706, 710, 1112, 1136, 1390, 1412, 1420, 1765, 2224, 2780, 2824, 2840, 3530, 5560, 5648, 5680, 7060, 9869, 11120, 14120, 19738, 25063, 28240, 39476, 49067, 49345, 50126, 78952, 98134, 98690, 100252, 125315, 157904, 196268, 197380, 200504, 245335, 250630, 392536, 394760, 401008, 490670, 501260, 785072, 789520, 981340, 1002520, 1962680, 2005040, 3483757, 3925360, 6967514, 13935028, 17418785, 27870056, 34837570, 55740112, 69675140, 139350280, 278700560]

約数ペア:

[(1, 278700560), (2, 139350280), (4, 69675140), (5, 55740112), (8, 34837570), (10, 27870056), (16, 17418785), (20, 13935028), (40, 6967514), (71, 3925360), (80, 3483757), (139, 2005040), (142, 1962680), (278, 1002520), (284, 981340), (353, 789520), (355, 785072), (556, 501260), (568, 490670), (695, 401008), (706, 394760), (710, 392536), (1112, 250630), (1136, 245335), (1390, 200504), (1412, 197380), (1420, 196268), (1765, 157904), (2224, 125315), (2780, 100252), (2824, 98690), (2840, 98134), (3530, 78952), (5560, 50126), (5648, 49345), (5680, 49067), (7060, 39476), (9869, 28240), (11120, 25063), (14120, 19738)]