31720025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1553}}^1$

素因数の和:1625

約数の個数: 24

約数和(自身を含む): 42393120

約数和(自身を除く): 10673095

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1075, 1553, 4085, 7765, 20425, 29507, 38825, 66779, 147535, 333895, 737675, 1268801, 1669475, 6344005, 31720025]

約数ペア:

[(1, 31720025), (5, 6344005), (19, 1669475), (25, 1268801), (43, 737675), (95, 333895), (215, 147535), (475, 66779), (817, 38825), (1075, 29507), (1553, 20425), (4085, 7765)]