18705141

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 35696640

約数和(自身を除く): 16991499

約数列:

[1, 3, 7, 9, 13, 21, 23, 27, 39, 63, 69, 91, 117, 161, 189, 207, 273, 299, 331, 351, 483, 621, 819, 897, 993, 1449, 2093, 2317, 2457, 2691, 2979, 4303, 4347, 6279, 6951, 7613, 8073, 8937, 12909, 18837, 20853, 22839, 30121, 38727, 53291, 56511, 62559, 68517, 90363, 98969, 116181, 159873, 205551, 271089, 296907, 479619, 692783, 813267, 890721, 1438857, 2078349, 2672163, 6235047, 18705141]

約数ペア:

[(1, 18705141), (3, 6235047), (7, 2672163), (9, 2078349), (13, 1438857), (21, 890721), (23, 813267), (27, 692783), (39, 479619), (63, 296907), (69, 271089), (91, 205551), (117, 159873), (161, 116181), (189, 98969), (207, 90363), (273, 68517), (299, 62559), (331, 56511), (351, 53291), (483, 38727), (621, 30121), (819, 22839), (897, 20853), (993, 18837), (1449, 12909), (2093, 8937), (2317, 8073), (2457, 7613), (2691, 6951), (2979, 6279), (4303, 4347)]