21173936

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1949}}^1$

素因数の和:2061

約数の個数: 40

約数和(自身を含む): 47392800

約数和(自身を除く): 26218864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1949, 2716, 3898, 5432, 7796, 10864, 13643, 15592, 27286, 31184, 54572, 109144, 189053, 218288, 378106, 756212, 1323371, 1512424, 2646742, 3024848, 5293484, 10586968, 21173936]

約数ペア:

[(1, 21173936), (2, 10586968), (4, 5293484), (7, 3024848), (8, 2646742), (14, 1512424), (16, 1323371), (28, 756212), (56, 378106), (97, 218288), (112, 189053), (194, 109144), (388, 54572), (679, 31184), (776, 27286), (1358, 15592), (1552, 13643), (1949, 10864), (2716, 7796), (3898, 5432)]