21405438

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:734

約数の個数: 64

約数和(自身を含む): 51763200

約数和(自身を除く): 30357762

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 31, 38, 54, 57, 62, 93, 114, 171, 186, 279, 342, 513, 558, 589, 673, 837, 1026, 1178, 1346, 1674, 1767, 2019, 3534, 4038, 5301, 6057, 10602, 12114, 12787, 15903, 18171, 20863, 25574, 31806, 36342, 38361, 41726, 62589, 76722, 115083, 125178, 187767, 230166, 345249, 375534, 396397, 563301, 690498, 792794, 1126602, 1189191, 2378382, 3567573, 7135146, 10702719, 21405438]

約数ペア:

[(1, 21405438), (2, 10702719), (3, 7135146), (6, 3567573), (9, 2378382), (18, 1189191), (19, 1126602), (27, 792794), (31, 690498), (38, 563301), (54, 396397), (57, 375534), (62, 345249), (93, 230166), (114, 187767), (171, 125178), (186, 115083), (279, 76722), (342, 62589), (513, 41726), (558, 38361), (589, 36342), (673, 31806), (837, 25574), (1026, 20863), (1178, 18171), (1346, 15903), (1674, 12787), (1767, 12114), (2019, 10602), (3534, 6057), (4038, 5301)]