219959971

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1672

約数の個数: 36

約数和(自身を含む): 293657616

約数和(自身を除く): 73697645

約数列:

[1, 7, 11, 23, 49, 77, 121, 161, 253, 539, 847, 1127, 1613, 1771, 2783, 5929, 11291, 12397, 17743, 19481, 37099, 79037, 124201, 136367, 195173, 259693, 408089, 869407, 1366211, 1817851, 2856623, 4488979, 9563477, 19996361, 31422853, 219959971]

約数ペア:

[(1, 219959971), (7, 31422853), (11, 19996361), (23, 9563477), (49, 4488979), (77, 2856623), (121, 1817851), (161, 1366211), (253, 869407), (539, 408089), (847, 259693), (1127, 195173), (1613, 136367), (1771, 124201), (2783, 79037), (5929, 37099), (11291, 19481), (12397, 17743)]