20404218128

素因数分解:

$2^4\times 7^1\times {\mathrm{223}}^1\times {\mathrm{269}}^1\times {\mathrm{3037}}^1$

素因数の和:3544

約数の個数: 80

約数和(自身を含む): 45567083520

約数和(自身を除く): 25162865392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 223, 269, 446, 538, 892, 1076, 1561, 1784, 1883, 2152, 3037, 3122, 3568, 3766, 4304, 6074, 6244, 7532, 12148, 12488, 15064, 21259, 24296, 24976, 30128, 42518, 48592, 59987, 85036, 119974, 170072, 239948, 340144, 419909, 479896, 677251, 816953, 839818, 959792, 1354502, 1633906, 1679636, 2709004, 3267812, 3359272, 4740757, 5418008, 5718671, 6535624, 6718544, 9481514, 10836016, 11437342, 13071248, 18963028, 22874684, 37926056, 45749368, 75852112, 91498736, 182180519, 364361038, 728722076, 1275263633, 1457444152, 2550527266, 2914888304, 5101054532, 10202109064, 20404218128]

約数ペア:

[(1, 20404218128), (2, 10202109064), (4, 5101054532), (7, 2914888304), (8, 2550527266), (14, 1457444152), (16, 1275263633), (28, 728722076), (56, 364361038), (112, 182180519), (223, 91498736), (269, 75852112), (446, 45749368), (538, 37926056), (892, 22874684), (1076, 18963028), (1561, 13071248), (1784, 11437342), (1883, 10836016), (2152, 9481514), (3037, 6718544), (3122, 6535624), (3568, 5718671), (3766, 5418008), (4304, 4740757), (6074, 3359272), (6244, 3267812), (7532, 2709004), (12148, 1679636), (12488, 1633906), (15064, 1354502), (21259, 959792), (24296, 839818), (24976, 816953), (30128, 677251), (42518, 479896), (48592, 419909), (59987, 340144), (85036, 239948), (119974, 170072)]