21789576

素因数分解:

$2^3\times 3^2\times {\mathrm{47}}^2\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 60735870

約数和(自身を除く): 38946294

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 47, 72, 94, 137, 141, 188, 274, 282, 376, 411, 423, 548, 564, 822, 846, 1096, 1128, 1233, 1644, 1692, 2209, 2466, 3288, 3384, 4418, 4932, 6439, 6627, 8836, 9864, 12878, 13254, 17672, 19317, 19881, 25756, 26508, 38634, 39762, 51512, 53016, 57951, 77268, 79524, 115902, 154536, 159048, 231804, 302633, 463608, 605266, 907899, 1210532, 1815798, 2421064, 2723697, 3631596, 5447394, 7263192, 10894788, 21789576]

約数ペア:

[(1, 21789576), (2, 10894788), (3, 7263192), (4, 5447394), (6, 3631596), (8, 2723697), (9, 2421064), (12, 1815798), (18, 1210532), (24, 907899), (36, 605266), (47, 463608), (72, 302633), (94, 231804), (137, 159048), (141, 154536), (188, 115902), (274, 79524), (282, 77268), (376, 57951), (411, 53016), (423, 51512), (548, 39762), (564, 38634), (822, 26508), (846, 25756), (1096, 19881), (1128, 19317), (1233, 17672), (1644, 13254), (1692, 12878), (2209, 9864), (2466, 8836), (3288, 6627), (3384, 6439), (4418, 4932)]