20913045

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{20809}}^1$

素因数の和:20884

約数の個数: 16

約数和(自身を含む): 33961920

約数和(自身を除く): 13048875

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 20809, 62427, 104045, 312135, 1394203, 4182609, 6971015, 20913045]

約数ペア:

[(1, 20913045), (3, 6971015), (5, 4182609), (15, 1394203), (67, 312135), (201, 104045), (335, 62427), (1005, 20809)]