66617240

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8369}}^1$

素因数の和:8579

約数の個数: 32

約数和(自身を含む): 150660000

約数和(自身を除く): 84042760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 8369, 16738, 33476, 41845, 66952, 83690, 167380, 334760, 1665431, 3330862, 6661724, 8327155, 13323448, 16654310, 33308620, 66617240]

約数ペア:

[(1, 66617240), (2, 33308620), (4, 16654310), (5, 13323448), (8, 8327155), (10, 6661724), (20, 3330862), (40, 1665431), (199, 334760), (398, 167380), (796, 83690), (995, 66952), (1592, 41845), (1990, 33476), (3980, 16738), (7960, 8369)]