19998770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{647}}^1$

素因数の和:946

約数の個数: 32

約数和(自身を含む): 39470976

約数和(自身を除く): 19472206

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 281, 562, 647, 1294, 1405, 2810, 3091, 3235, 6182, 6470, 7117, 14234, 15455, 30910, 35585, 71170, 181807, 363614, 909035, 1818070, 1999877, 3999754, 9999385, 19998770]

約数ペア:

[(1, 19998770), (2, 9999385), (5, 3999754), (10, 1999877), (11, 1818070), (22, 909035), (55, 363614), (110, 181807), (281, 71170), (562, 35585), (647, 30910), (1294, 15455), (1405, 14234), (2810, 7117), (3091, 6470), (3235, 6182)]