27991028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 56965440

約数和(自身を除く): 28974412

約数列:

[1, 2, 4, 13, 19, 26, 38, 41, 52, 76, 82, 164, 247, 494, 533, 691, 779, 988, 1066, 1382, 1558, 2132, 2764, 3116, 8983, 10127, 13129, 17966, 20254, 26258, 28331, 35932, 40508, 52516, 56662, 113324, 170677, 341354, 368303, 538289, 682708, 736606, 1076578, 1473212, 2153156, 6997757, 13995514, 27991028]

約数ペア:

[(1, 27991028), (2, 13995514), (4, 6997757), (13, 2153156), (19, 1473212), (26, 1076578), (38, 736606), (41, 682708), (52, 538289), (76, 368303), (82, 341354), (164, 170677), (247, 113324), (494, 56662), (533, 52516), (691, 40508), (779, 35932), (988, 28331), (1066, 26258), (1382, 20254), (1558, 17966), (2132, 13129), (2764, 10127), (3116, 8983)]