20001289

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{617}}^1$

素因数の和:1056

約数の個数: 16

約数和(自身を含む): 25036416

約数和(自身を除く): 5035127

約数列:

[1, 7, 11, 77, 421, 617, 2947, 4319, 4631, 6787, 32417, 47509, 259757, 1818299, 2857327, 20001289]

約数ペア:

[(1, 20001289), (7, 2857327), (11, 1818299), (77, 259757), (421, 47509), (617, 32417), (2947, 6787), (4319, 4631)]