20667972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{367}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 54961536

約数和(自身を除く): 34293564

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 361, 367, 494, 722, 734, 741, 988, 1083, 1101, 1444, 1468, 1482, 2166, 2202, 2964, 4332, 4404, 4693, 4771, 6973, 9386, 9542, 13946, 14079, 14313, 18772, 19084, 20919, 27892, 28158, 28626, 41838, 56316, 57252, 83676, 90649, 132487, 181298, 264974, 271947, 362596, 397461, 529948, 543894, 794922, 1087788, 1589844, 1722331, 3444662, 5166993, 6889324, 10333986, 20667972]

約数ペア:

[(1, 20667972), (2, 10333986), (3, 6889324), (4, 5166993), (6, 3444662), (12, 1722331), (13, 1589844), (19, 1087788), (26, 794922), (38, 543894), (39, 529948), (52, 397461), (57, 362596), (76, 271947), (78, 264974), (114, 181298), (156, 132487), (228, 90649), (247, 83676), (361, 57252), (367, 56316), (494, 41838), (722, 28626), (734, 28158), (741, 27892), (988, 20919), (1083, 19084), (1101, 18772), (1444, 14313), (1468, 14079), (1482, 13946), (2166, 9542), (2202, 9386), (2964, 6973), (4332, 4771), (4404, 4693)]