218528405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{971}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 291133440

約数和(自身を除く): 72605035

約数列:

[1, 5, 19, 23, 95, 103, 115, 437, 515, 971, 1957, 2185, 2369, 4855, 9785, 11845, 18449, 22333, 45011, 92245, 100013, 111665, 225055, 424327, 500065, 1900247, 2121635, 2300299, 9501235, 11501495, 43705681, 218528405]

約数ペア:

[(1, 218528405), (5, 43705681), (19, 11501495), (23, 9501235), (95, 2300299), (103, 2121635), (115, 1900247), (437, 500065), (515, 424327), (971, 225055), (1957, 111665), (2185, 100013), (2369, 92245), (4855, 45011), (9785, 22333), (11845, 18449)]