21311360

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 128

約数和(自身を含む): 59927040

約数和(自身を除く): 38615680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 67, 70, 71, 80, 112, 128, 134, 140, 142, 160, 224, 268, 280, 284, 320, 335, 355, 448, 469, 497, 536, 560, 568, 640, 670, 710, 896, 938, 994, 1072, 1120, 1136, 1340, 1420, 1876, 1988, 2144, 2240, 2272, 2345, 2485, 2680, 2840, 3752, 3976, 4288, 4480, 4544, 4690, 4757, 4970, 5360, 5680, 7504, 7952, 8576, 9088, 9380, 9514, 9940, 10720, 11360, 15008, 15904, 18760, 19028, 19880, 21440, 22720, 23785, 30016, 31808, 33299, 37520, 38056, 39760, 42880, 45440, 47570, 60032, 63616, 66598, 75040, 76112, 79520, 95140, 133196, 150080, 152224, 159040, 166495, 190280, 266392, 300160, 304448, 318080, 332990, 380560, 532784, 608896, 665980, 761120, 1065568, 1331960, 1522240, 2131136, 2663920, 3044480, 4262272, 5327840, 10655680, 21311360]

約数ペア:

[(1, 21311360), (2, 10655680), (4, 5327840), (5, 4262272), (7, 3044480), (8, 2663920), (10, 2131136), (14, 1522240), (16, 1331960), (20, 1065568), (28, 761120), (32, 665980), (35, 608896), (40, 532784), (56, 380560), (64, 332990), (67, 318080), (70, 304448), (71, 300160), (80, 266392), (112, 190280), (128, 166495), (134, 159040), (140, 152224), (142, 150080), (160, 133196), (224, 95140), (268, 79520), (280, 76112), (284, 75040), (320, 66598), (335, 63616), (355, 60032), (448, 47570), (469, 45440), (497, 42880), (536, 39760), (560, 38056), (568, 37520), (640, 33299), (670, 31808), (710, 30016), (896, 23785), (938, 22720), (994, 21440), (1072, 19880), (1120, 19028), (1136, 18760), (1340, 15904), (1420, 15008), (1876, 11360), (1988, 10720), (2144, 9940), (2240, 9514), (2272, 9380), (2345, 9088), (2485, 8576), (2680, 7952), (2840, 7504), (3752, 5680), (3976, 5360), (4288, 4970), (4480, 4757), (4544, 4690)]