678808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:187

約数の個数: 32

約数和(自身を含む): 1406160

約数和(自身を除く): 727352

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 107, 122, 214, 244, 428, 488, 793, 856, 1391, 1586, 2782, 3172, 5564, 6344, 6527, 11128, 13054, 26108, 52216, 84851, 169702, 339404, 678808]

約数ペア:

[(1, 678808), (2, 339404), (4, 169702), (8, 84851), (13, 52216), (26, 26108), (52, 13054), (61, 11128), (104, 6527), (107, 6344), (122, 5564), (214, 3172), (244, 2782), (428, 1586), (488, 1391), (793, 856)]