20818015

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{523}}^1$

素因数の和:966

約数の個数: 16

約数和(自身を含む): 26409600

約数和(自身を除く): 5591585

約数列:

[1, 5, 19, 95, 419, 523, 2095, 2615, 7961, 9937, 39805, 49685, 219137, 1095685, 4163603, 20818015]

約数ペア:

[(1, 20818015), (5, 4163603), (19, 1095685), (95, 219137), (419, 49685), (523, 39805), (2095, 9937), (2615, 7961)]