19885896

素因数分解:

$2^3\times 3^2\times {\mathrm{139}}^1\times {\mathrm{1987}}^1$

素因数の和:2138

約数の個数: 48

約数和(自身を含む): 54272400

約数和(自身を除く): 34386504

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 139, 278, 417, 556, 834, 1112, 1251, 1668, 1987, 2502, 3336, 3974, 5004, 5961, 7948, 10008, 11922, 15896, 17883, 23844, 35766, 47688, 71532, 143064, 276193, 552386, 828579, 1104772, 1657158, 2209544, 2485737, 3314316, 4971474, 6628632, 9942948, 19885896]

約数ペア:

[(1, 19885896), (2, 9942948), (3, 6628632), (4, 4971474), (6, 3314316), (8, 2485737), (9, 2209544), (12, 1657158), (18, 1104772), (24, 828579), (36, 552386), (72, 276193), (139, 143064), (278, 71532), (417, 47688), (556, 35766), (834, 23844), (1112, 17883), (1251, 15896), (1668, 11922), (1987, 10008), (2502, 7948), (3336, 5961), (3974, 5004)]