2648045240

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{4211}}^1$

素因数の和:4500

約数の個数: 64

約数和(自身を含む): 6065280000

約数和(自身を除く): 3417234760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 199, 316, 395, 398, 632, 790, 796, 995, 1580, 1592, 1990, 3160, 3980, 4211, 7960, 8422, 15721, 16844, 21055, 31442, 33688, 42110, 62884, 78605, 84220, 125768, 157210, 168440, 314420, 332669, 628840, 665338, 837989, 1330676, 1663345, 1675978, 2661352, 3326690, 3351956, 4189945, 6653380, 6703912, 8379890, 13306760, 16759780, 33519560, 66201131, 132402262, 264804524, 331005655, 529609048, 662011310, 1324022620, 2648045240]

約数ペア:

[(1, 2648045240), (2, 1324022620), (4, 662011310), (5, 529609048), (8, 331005655), (10, 264804524), (20, 132402262), (40, 66201131), (79, 33519560), (158, 16759780), (199, 13306760), (316, 8379890), (395, 6703912), (398, 6653380), (632, 4189945), (790, 3351956), (796, 3326690), (995, 2661352), (1580, 1675978), (1592, 1663345), (1990, 1330676), (3160, 837989), (3980, 665338), (4211, 628840), (7960, 332669), (8422, 314420), (15721, 168440), (16844, 157210), (21055, 125768), (31442, 84220), (33688, 78605), (42110, 62884)]