20163858

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 48190464

約数和(自身を除く): 28026606

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 71, 78, 142, 143, 213, 286, 331, 426, 429, 662, 781, 858, 923, 993, 1562, 1846, 1986, 2343, 2769, 3641, 4303, 4686, 5538, 7282, 8606, 10153, 10923, 12909, 20306, 21846, 23501, 25818, 30459, 47002, 47333, 60918, 70503, 94666, 141006, 141999, 258511, 283998, 305513, 517022, 611026, 775533, 916539, 1551066, 1833078, 3360643, 6721286, 10081929, 20163858]

約数ペア:

[(1, 20163858), (2, 10081929), (3, 6721286), (6, 3360643), (11, 1833078), (13, 1551066), (22, 916539), (26, 775533), (33, 611026), (39, 517022), (66, 305513), (71, 283998), (78, 258511), (142, 141999), (143, 141006), (213, 94666), (286, 70503), (331, 60918), (426, 47333), (429, 47002), (662, 30459), (781, 25818), (858, 23501), (923, 21846), (993, 20306), (1562, 12909), (1846, 10923), (1986, 10153), (2343, 8606), (2769, 7282), (3641, 5538), (4303, 4686)]