19991272

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{8707}}^1$

素因数の和:8761

約数の個数: 32

約数和(自身を含む): 43888320

約数和(自身を除く): 23897048

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 287, 328, 574, 1148, 2296, 8707, 17414, 34828, 60949, 69656, 121898, 243796, 356987, 487592, 713974, 1427948, 2498909, 2855896, 4997818, 9995636, 19991272]

約数ペア:

[(1, 19991272), (2, 9995636), (4, 4997818), (7, 2855896), (8, 2498909), (14, 1427948), (28, 713974), (41, 487592), (56, 356987), (82, 243796), (164, 121898), (287, 69656), (328, 60949), (574, 34828), (1148, 17414), (2296, 8707)]