21008889785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2143}}^1\times {\mathrm{3209}}^1$

素因数の和:5417

約数の個数: 32

約数和(自身を含む): 27749191680

約数和(自身を除く): 6740301895

約数列:

[1, 5, 13, 47, 65, 235, 611, 2143, 3055, 3209, 10715, 16045, 27859, 41717, 100721, 139295, 150823, 208585, 503605, 754115, 1309373, 1960699, 6546865, 6876887, 9803495, 34384435, 89399531, 323213689, 446997655, 1616068445, 4201777957, 21008889785]

約数ペア:

[(1, 21008889785), (5, 4201777957), (13, 1616068445), (47, 446997655), (65, 323213689), (235, 89399531), (611, 34384435), (2143, 9803495), (3055, 6876887), (3209, 6546865), (10715, 1960699), (16045, 1309373), (27859, 754115), (41717, 503605), (100721, 208585), (139295, 150823)]