19908746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{461}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 35392896

約数和(自身を除く): 15484150

約数列:

[1, 2, 11, 13, 22, 26, 143, 151, 286, 302, 461, 922, 1661, 1963, 3322, 3926, 5071, 5993, 10142, 11986, 21593, 43186, 65923, 69611, 131846, 139222, 765721, 904943, 1531442, 1809886, 9954373, 19908746]

約数ペア:

[(1, 19908746), (2, 9954373), (11, 1809886), (13, 1531442), (22, 904943), (26, 765721), (143, 139222), (151, 131846), (286, 69611), (302, 65923), (461, 43186), (922, 21593), (1661, 11986), (1963, 10142), (3322, 5993), (3926, 5071)]