19911248

素因数分解:

$2^4\times 7^2\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:364

約数の個数: 60

約数和(自身を含む): 45482580

約数和(自身を除く): 25571332

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 109, 112, 196, 218, 233, 392, 436, 466, 763, 784, 872, 932, 1526, 1631, 1744, 1864, 3052, 3262, 3728, 5341, 6104, 6524, 10682, 11417, 12208, 13048, 21364, 22834, 25397, 26096, 42728, 45668, 50794, 85456, 91336, 101588, 177779, 182672, 203176, 355558, 406352, 711116, 1244453, 1422232, 2488906, 2844464, 4977812, 9955624, 19911248]

約数ペア:

[(1, 19911248), (2, 9955624), (4, 4977812), (7, 2844464), (8, 2488906), (14, 1422232), (16, 1244453), (28, 711116), (49, 406352), (56, 355558), (98, 203176), (109, 182672), (112, 177779), (196, 101588), (218, 91336), (233, 85456), (392, 50794), (436, 45668), (466, 42728), (763, 26096), (784, 25397), (872, 22834), (932, 21364), (1526, 13048), (1631, 12208), (1744, 11417), (1864, 10682), (3052, 6524), (3262, 6104), (3728, 5341)]