21195664

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1951}}^1$

素因数の和:2063

約数の個数: 40

約数和(自身を含む): 47441408

約数和(自身を除く): 26245744

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1951, 2716, 3902, 5432, 7804, 10864, 13657, 15608, 27314, 31216, 54628, 109256, 189247, 218512, 378494, 756988, 1324729, 1513976, 2649458, 3027952, 5298916, 10597832, 21195664]

約数ペア:

[(1, 21195664), (2, 10597832), (4, 5298916), (7, 3027952), (8, 2649458), (14, 1513976), (16, 1324729), (28, 756988), (56, 378494), (97, 218512), (112, 189247), (194, 109256), (388, 54628), (679, 31216), (776, 27314), (1358, 15608), (1552, 13657), (1951, 10864), (2716, 7804), (3902, 5432)]