20003165

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43963}}^1$

素因数の和:43988

約数の個数: 16

約数和(自身を含む): 29543808

約数和(自身を除く): 9540643

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43963, 219815, 307741, 571519, 1538705, 2857595, 4000633, 20003165]

約数ペア:

[(1, 20003165), (5, 4000633), (7, 2857595), (13, 1538705), (35, 571519), (65, 307741), (91, 219815), (455, 43963)]