21023760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{349}}^1$

素因数の和:616

約数の個数: 80

約数和(自身を含む): 65620800

約数和(自身を除く): 44597040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 251, 349, 502, 698, 753, 1004, 1047, 1255, 1396, 1506, 1745, 2008, 2094, 2510, 2792, 3012, 3490, 3765, 4016, 4188, 5020, 5235, 5584, 6024, 6980, 7530, 8376, 10040, 10470, 12048, 13960, 15060, 16752, 20080, 20940, 27920, 30120, 41880, 60240, 83760, 87599, 175198, 262797, 350396, 437995, 525594, 700792, 875990, 1051188, 1313985, 1401584, 1751980, 2102376, 2627970, 3503960, 4204752, 5255940, 7007920, 10511880, 21023760]

約数ペア:

[(1, 21023760), (2, 10511880), (3, 7007920), (4, 5255940), (5, 4204752), (6, 3503960), (8, 2627970), (10, 2102376), (12, 1751980), (15, 1401584), (16, 1313985), (20, 1051188), (24, 875990), (30, 700792), (40, 525594), (48, 437995), (60, 350396), (80, 262797), (120, 175198), (240, 87599), (251, 83760), (349, 60240), (502, 41880), (698, 30120), (753, 27920), (1004, 20940), (1047, 20080), (1255, 16752), (1396, 15060), (1506, 13960), (1745, 12048), (2008, 10470), (2094, 10040), (2510, 8376), (2792, 7530), (3012, 6980), (3490, 6024), (3765, 5584), (4016, 5235), (4188, 5020)]