207221721

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1\times {\mathrm{1031}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 335259648

約数和(自身を除く): 128037927

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 563, 1031, 1689, 3093, 3941, 7217, 9571, 11823, 17527, 21651, 28713, 52581, 66997, 122689, 200991, 368067, 580453, 1741359, 4063171, 9867701, 12189513, 29603103, 69073907, 207221721]

約数ペア:

[(1, 207221721), (3, 69073907), (7, 29603103), (17, 12189513), (21, 9867701), (51, 4063171), (119, 1741359), (357, 580453), (563, 368067), (1031, 200991), (1689, 122689), (3093, 66997), (3941, 52581), (7217, 28713), (9571, 21651), (11823, 17527)]