21526778

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 41262984

約数和(自身を除く): 19736206

約数列:

[1, 2, 7, 13, 14, 26, 49, 61, 91, 98, 122, 182, 277, 427, 554, 637, 793, 854, 1274, 1586, 1939, 2989, 3601, 3878, 5551, 5978, 7202, 11102, 13573, 16897, 25207, 27146, 33794, 38857, 50414, 77714, 118279, 176449, 219661, 236558, 352898, 439322, 827953, 1537627, 1655906, 3075254, 10763389, 21526778]

約数ペア:

[(1, 21526778), (2, 10763389), (7, 3075254), (13, 1655906), (14, 1537627), (26, 827953), (49, 439322), (61, 352898), (91, 236558), (98, 219661), (122, 176449), (182, 118279), (277, 77714), (427, 50414), (554, 38857), (637, 33794), (793, 27146), (854, 25207), (1274, 16897), (1586, 13573), (1939, 11102), (2989, 7202), (3601, 5978), (3878, 5551)]