20201515

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 24773760

約数和(自身を除く): 4572245

約数列:

[1, 5, 101, 109, 367, 505, 545, 1835, 11009, 37067, 40003, 55045, 185335, 200015, 4040303, 20201515]

約数ペア:

[(1, 20201515), (5, 4040303), (101, 200015), (109, 185335), (367, 55045), (505, 40003), (545, 37067), (1835, 11009)]