20617280

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3391}}^1$

素因数の和:3427

約数の個数: 56

約数和(自身を含む): 51694080

約数和(自身を除く): 31076800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3391, 6080, 6782, 13564, 16955, 27128, 33910, 54256, 64429, 67820, 108512, 128858, 135640, 217024, 257716, 271280, 322145, 515432, 542560, 644290, 1030864, 1085120, 1288580, 2061728, 2577160, 4123456, 5154320, 10308640, 20617280]

約数ペア:

[(1, 20617280), (2, 10308640), (4, 5154320), (5, 4123456), (8, 2577160), (10, 2061728), (16, 1288580), (19, 1085120), (20, 1030864), (32, 644290), (38, 542560), (40, 515432), (64, 322145), (76, 271280), (80, 257716), (95, 217024), (152, 135640), (160, 128858), (190, 108512), (304, 67820), (320, 64429), (380, 54256), (608, 33910), (760, 27128), (1216, 16955), (1520, 13564), (3040, 6782), (3391, 6080)]