21954128

素因数分解:

$2^4\times 7^1\times {\mathrm{211}}^1\times {\mathrm{929}}^1$

素因数の和:1155

約数の個数: 40

約数和(自身を含む): 48895680

約数和(自身を除く): 26941552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 211, 422, 844, 929, 1477, 1688, 1858, 2954, 3376, 3716, 5908, 6503, 7432, 11816, 13006, 14864, 23632, 26012, 52024, 104048, 196019, 392038, 784076, 1372133, 1568152, 2744266, 3136304, 5488532, 10977064, 21954128]

約数ペア:

[(1, 21954128), (2, 10977064), (4, 5488532), (7, 3136304), (8, 2744266), (14, 1568152), (16, 1372133), (28, 784076), (56, 392038), (112, 196019), (211, 104048), (422, 52024), (844, 26012), (929, 23632), (1477, 14864), (1688, 13006), (1858, 11816), (2954, 7432), (3376, 6503), (3716, 5908)]