20121563

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{9011}}^1$

素因数の和:9058

約数の個数: 16

約数和(自身を含む): 25954560

約数和(自身を除く): 5832997

約数列:

[1, 7, 11, 29, 77, 203, 319, 2233, 9011, 63077, 99121, 261319, 693847, 1829233, 2874509, 20121563]

約数ペア:

[(1, 20121563), (7, 2874509), (11, 1829233), (29, 693847), (77, 261319), (203, 99121), (319, 63077), (2233, 9011)]