20002015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{9829}}^1$

素因数の和:9882

約数の個数: 16

約数和(自身を含む): 26894880

約数和(自身を除く): 6892865

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 9829, 49145, 108119, 363673, 540595, 1818365, 4000403, 20002015]

約数ペア:

[(1, 20002015), (5, 4000403), (11, 1818365), (37, 540595), (55, 363673), (185, 108119), (407, 49145), (2035, 9829)]