128728740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9887}}^1$

素因数の和:9937

約数の個数: 96

約数和(自身を含む): 425263104

約数和(自身を除く): 296534364

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1860, 2170, 2604, 3255, 4340, 6510, 9887, 13020, 19774, 29661, 39548, 49435, 59322, 69209, 98870, 118644, 138418, 148305, 197740, 207627, 276836, 296610, 306497, 346045, 415254, 593220, 612994, 692090, 830508, 919491, 1038135, 1225988, 1384180, 1532485, 1838982, 2076270, 2145479, 3064970, 3677964, 4152540, 4290958, 4597455, 6129940, 6436437, 8581916, 9194910, 10727395, 12872874, 18389820, 21454790, 25745748, 32182185, 42909580, 64364370, 128728740]

約数ペア:

[(1, 128728740), (2, 64364370), (3, 42909580), (4, 32182185), (5, 25745748), (6, 21454790), (7, 18389820), (10, 12872874), (12, 10727395), (14, 9194910), (15, 8581916), (20, 6436437), (21, 6129940), (28, 4597455), (30, 4290958), (31, 4152540), (35, 3677964), (42, 3064970), (60, 2145479), (62, 2076270), (70, 1838982), (84, 1532485), (93, 1384180), (105, 1225988), (124, 1038135), (140, 919491), (155, 830508), (186, 692090), (210, 612994), (217, 593220), (310, 415254), (372, 346045), (420, 306497), (434, 296610), (465, 276836), (620, 207627), (651, 197740), (868, 148305), (930, 138418), (1085, 118644), (1302, 98870), (1860, 69209), (2170, 59322), (2604, 49435), (3255, 39548), (4340, 29661), (6510, 19774), (9887, 13020)]