21196808

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{673}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 41410560

約数和(自身を除く): 20213752

約数列:

[1, 2, 4, 8, 31, 62, 124, 127, 248, 254, 508, 673, 1016, 1346, 2692, 3937, 5384, 7874, 15748, 20863, 31496, 41726, 83452, 85471, 166904, 170942, 341884, 683768, 2649601, 5299202, 10598404, 21196808]

約数ペア:

[(1, 21196808), (2, 10598404), (4, 5299202), (8, 2649601), (31, 683768), (62, 341884), (124, 170942), (127, 166904), (248, 85471), (254, 83452), (508, 41726), (673, 31496), (1016, 20863), (1346, 15748), (2692, 7874), (3937, 5384)]