19956688

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65647}}^1$

素因数の和:65674

約数の個数: 20

約数和(自身を含む): 40701760

約数和(自身を除く): 20745072

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65647, 131294, 262588, 525176, 1050352, 1247293, 2494586, 4989172, 9978344, 19956688]

約数ペア:

[(1, 19956688), (2, 9978344), (4, 4989172), (8, 2494586), (16, 1247293), (19, 1050352), (38, 525176), (76, 262588), (152, 131294), (304, 65647)]