640647054

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{60427}}^1$

素因数の和:60485

約数の個数: 48

約数和(自身を含む): 1508282880

約数和(自身を除く): 867635826

約数列:

[1, 2, 3, 6, 9, 18, 19, 31, 38, 57, 62, 93, 114, 171, 186, 279, 342, 558, 589, 1178, 1767, 3534, 5301, 10602, 60427, 120854, 181281, 362562, 543843, 1087686, 1148113, 1873237, 2296226, 3444339, 3746474, 5619711, 6888678, 10333017, 11239422, 16859133, 20666034, 33718266, 35591503, 71183006, 106774509, 213549018, 320323527, 640647054]

約数ペア:

[(1, 640647054), (2, 320323527), (3, 213549018), (6, 106774509), (9, 71183006), (18, 35591503), (19, 33718266), (31, 20666034), (38, 16859133), (57, 11239422), (62, 10333017), (93, 6888678), (114, 5619711), (171, 3746474), (186, 3444339), (279, 2296226), (342, 1873237), (558, 1148113), (589, 1087686), (1178, 543843), (1767, 362562), (3534, 181281), (5301, 120854), (10602, 60427)]