917291221

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1213}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 1235599488

約数和(自身を除く): 318308267

約数列:

[1, 7, 11, 23, 49, 61, 77, 161, 253, 427, 539, 671, 1127, 1213, 1403, 1771, 2989, 4697, 8491, 9821, 12397, 13343, 15433, 27899, 32879, 59437, 68747, 73993, 93401, 108031, 195293, 306889, 517951, 653807, 756217, 813923, 1367051, 1701839, 2148223, 3625657, 5697461, 11912873, 15037561, 18720229, 39882227, 83390111, 131041603, 917291221]

約数ペア:

[(1, 917291221), (7, 131041603), (11, 83390111), (23, 39882227), (49, 18720229), (61, 15037561), (77, 11912873), (161, 5697461), (253, 3625657), (427, 2148223), (539, 1701839), (671, 1367051), (1127, 813923), (1213, 756217), (1403, 653807), (1771, 517951), (2989, 306889), (4697, 195293), (8491, 108031), (9821, 93401), (12397, 73993), (13343, 68747), (15433, 59437), (27899, 32879)]