21278448

素因数分解:

$2^4\times 3^2\times {\mathrm{107}}^1\times {\mathrm{1381}}^1$

素因数の和:1502

約数の個数: 60

約数和(自身を含む): 60150168

約数和(自身を除く): 38871720

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 107, 144, 214, 321, 428, 642, 856, 963, 1284, 1381, 1712, 1926, 2568, 2762, 3852, 4143, 5136, 5524, 7704, 8286, 11048, 12429, 15408, 16572, 22096, 24858, 33144, 49716, 66288, 99432, 147767, 198864, 295534, 443301, 591068, 886602, 1182136, 1329903, 1773204, 2364272, 2659806, 3546408, 5319612, 7092816, 10639224, 21278448]

約数ペア:

[(1, 21278448), (2, 10639224), (3, 7092816), (4, 5319612), (6, 3546408), (8, 2659806), (9, 2364272), (12, 1773204), (16, 1329903), (18, 1182136), (24, 886602), (36, 591068), (48, 443301), (72, 295534), (107, 198864), (144, 147767), (214, 99432), (321, 66288), (428, 49716), (642, 33144), (856, 24858), (963, 22096), (1284, 16572), (1381, 15408), (1712, 12429), (1926, 11048), (2568, 8286), (2762, 7704), (3852, 5524), (4143, 5136)]