20018945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5011}}^1$

素因数の和:5080

約数の個数: 16

約数和(自身を含む): 25982208

約数和(自身を除く): 5963263

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5011, 25055, 85187, 235517, 425935, 1177585, 4003789, 20018945]

約数ペア:

[(1, 20018945), (5, 4003789), (17, 1177585), (47, 425935), (85, 235517), (235, 85187), (799, 25055), (3995, 5011)]