21259336

素因数分解:

$2^3\times 7^2\times {\mathrm{193}}^1\times {\mathrm{281}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 46775340

約数和(自身を除く): 25516004

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 193, 196, 281, 386, 392, 562, 772, 1124, 1351, 1544, 1967, 2248, 2702, 3934, 5404, 7868, 9457, 10808, 13769, 15736, 18914, 27538, 37828, 54233, 55076, 75656, 108466, 110152, 216932, 379631, 433864, 759262, 1518524, 2657417, 3037048, 5314834, 10629668, 21259336]

約数ペア:

[(1, 21259336), (2, 10629668), (4, 5314834), (7, 3037048), (8, 2657417), (14, 1518524), (28, 759262), (49, 433864), (56, 379631), (98, 216932), (193, 110152), (196, 108466), (281, 75656), (386, 55076), (392, 54233), (562, 37828), (772, 27538), (1124, 18914), (1351, 15736), (1544, 13769), (1967, 10808), (2248, 9457), (2702, 7868), (3934, 5404)]