20759615

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1999}}^1$

素因数の和:2102

約数の個数: 16

約数和(自身を含む): 26112000

約数和(自身を除く): 5352385

約数列:

[1, 5, 31, 67, 155, 335, 1999, 2077, 9995, 10385, 61969, 133933, 309845, 669665, 4151923, 20759615]

約数ペア:

[(1, 20759615), (5, 4151923), (31, 669665), (67, 309845), (155, 133933), (335, 61969), (1999, 10385), (2077, 9995)]