7749980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 18760896

約数和(自身を除く): 11010916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 281, 394, 562, 788, 985, 1124, 1379, 1405, 1967, 1970, 2758, 2810, 3934, 3940, 5516, 5620, 6895, 7868, 9835, 13790, 19670, 27580, 39340, 55357, 110714, 221428, 276785, 387499, 553570, 774998, 1107140, 1549996, 1937495, 3874990, 7749980]

約数ペア:

[(1, 7749980), (2, 3874990), (4, 1937495), (5, 1549996), (7, 1107140), (10, 774998), (14, 553570), (20, 387499), (28, 276785), (35, 221428), (70, 110714), (140, 55357), (197, 39340), (281, 27580), (394, 19670), (562, 13790), (788, 9835), (985, 7868), (1124, 6895), (1379, 5620), (1405, 5516), (1967, 3940), (1970, 3934), (2758, 2810)]