20121550865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1\times {\mathrm{16763}}^1$

素因数の和:17153

約数の個数: 32

約数和(自身を含む): 26530035840

約数和(自身を除く): 6408484975

約数列:

[1, 5, 13, 59, 65, 295, 313, 767, 1565, 3835, 4069, 16763, 18467, 20345, 83815, 92335, 217919, 240071, 989017, 1089595, 1200355, 4945085, 5246819, 12857221, 26234095, 64286105, 68208647, 309562321, 341043235, 1547811605, 4024310173, 20121550865]

約数ペア:

[(1, 20121550865), (5, 4024310173), (13, 1547811605), (59, 341043235), (65, 309562321), (295, 68208647), (313, 64286105), (767, 26234095), (1565, 12857221), (3835, 5246819), (4069, 4945085), (16763, 1200355), (18467, 1089595), (20345, 989017), (83815, 240071), (92335, 217919)]