201730991

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 259276800

約数和(自身を除く): 57545809

約数列:

[1, 7, 11, 49, 77, 127, 343, 421, 539, 889, 1397, 2947, 3773, 4631, 6223, 9779, 20629, 32417, 43561, 53467, 68453, 144403, 226919, 374269, 479171, 588137, 1588433, 2619883, 4116959, 18339181, 28818713, 201730991]

約数ペア:

[(1, 201730991), (7, 28818713), (11, 18339181), (49, 4116959), (77, 2619883), (127, 1588433), (343, 588137), (421, 479171), (539, 374269), (889, 226919), (1397, 144403), (2947, 68453), (3773, 53467), (4631, 43561), (6223, 32417), (9779, 20629)]