21025928

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 30684472

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 44, 56, 58, 77, 88, 107, 116, 121, 154, 203, 214, 232, 242, 308, 319, 406, 428, 484, 616, 638, 749, 812, 847, 856, 968, 1177, 1276, 1498, 1624, 1694, 2233, 2354, 2552, 2996, 3103, 3388, 3509, 4466, 4708, 5992, 6206, 6776, 7018, 8239, 8932, 9416, 12412, 12947, 14036, 16478, 17864, 21721, 24563, 24824, 25894, 28072, 32956, 34133, 43442, 49126, 51788, 65912, 68266, 86884, 90629, 98252, 103576, 136532, 173768, 181258, 196504, 238931, 273064, 362516, 375463, 477862, 725032, 750926, 955724, 1501852, 1911448, 2628241, 3003704, 5256482, 10512964, 21025928]

約数ペア:

[(1, 21025928), (2, 10512964), (4, 5256482), (7, 3003704), (8, 2628241), (11, 1911448), (14, 1501852), (22, 955724), (28, 750926), (29, 725032), (44, 477862), (56, 375463), (58, 362516), (77, 273064), (88, 238931), (107, 196504), (116, 181258), (121, 173768), (154, 136532), (203, 103576), (214, 98252), (232, 90629), (242, 86884), (308, 68266), (319, 65912), (406, 51788), (428, 49126), (484, 43442), (616, 34133), (638, 32956), (749, 28072), (812, 25894), (847, 24824), (856, 24563), (968, 21721), (1177, 17864), (1276, 16478), (1498, 14036), (1624, 12947), (1694, 12412), (2233, 9416), (2354, 8932), (2552, 8239), (2996, 7018), (3103, 6776), (3388, 6206), (3509, 5992), (4466, 4708)]