66861990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:515

約数の個数: 128

約数和(自身を含む): 196922880

約数和(自身を除く): 130060890

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 43, 45, 54, 65, 78, 86, 90, 117, 129, 130, 135, 195, 215, 234, 258, 270, 351, 387, 390, 430, 443, 559, 585, 645, 702, 774, 886, 1118, 1161, 1170, 1290, 1329, 1677, 1755, 1935, 2215, 2322, 2658, 2795, 3354, 3510, 3870, 3987, 4430, 5031, 5590, 5759, 5805, 6645, 7974, 8385, 10062, 11518, 11610, 11961, 13290, 15093, 16770, 17277, 19049, 19935, 23922, 25155, 28795, 30186, 34554, 38098, 39870, 50310, 51831, 57147, 57590, 59805, 75465, 86385, 95245, 103662, 114294, 119610, 150930, 155493, 171441, 172770, 190490, 247637, 259155, 285735, 310986, 342882, 495274, 514323, 518310, 571470, 742911, 777465, 857205, 1028646, 1238185, 1485822, 1554930, 1714410, 2228733, 2476370, 2571615, 3714555, 4457466, 5143230, 6686199, 7429110, 11143665, 13372398, 22287330, 33430995, 66861990]

約数ペア:

[(1, 66861990), (2, 33430995), (3, 22287330), (5, 13372398), (6, 11143665), (9, 7429110), (10, 6686199), (13, 5143230), (15, 4457466), (18, 3714555), (26, 2571615), (27, 2476370), (30, 2228733), (39, 1714410), (43, 1554930), (45, 1485822), (54, 1238185), (65, 1028646), (78, 857205), (86, 777465), (90, 742911), (117, 571470), (129, 518310), (130, 514323), (135, 495274), (195, 342882), (215, 310986), (234, 285735), (258, 259155), (270, 247637), (351, 190490), (387, 172770), (390, 171441), (430, 155493), (443, 150930), (559, 119610), (585, 114294), (645, 103662), (702, 95245), (774, 86385), (886, 75465), (1118, 59805), (1161, 57590), (1170, 57147), (1290, 51831), (1329, 50310), (1677, 39870), (1755, 38098), (1935, 34554), (2215, 30186), (2322, 28795), (2658, 25155), (2795, 23922), (3354, 19935), (3510, 19049), (3870, 17277), (3987, 16770), (4430, 15093), (5031, 13290), (5590, 11961), (5759, 11610), (5805, 11518), (6645, 10062), (7974, 8385)]