20378495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5101}}^1$

素因数の和:5170

約数の個数: 16

約数和(自身を含む): 26448768

約数和(自身を除く): 6070273

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5101, 25505, 86717, 239747, 433585, 1198735, 4075699, 20378495]

約数ペア:

[(1, 20378495), (5, 4075699), (17, 1198735), (47, 433585), (85, 239747), (235, 86717), (799, 25505), (3995, 5101)]