18820945

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2393}}^1$

素因数の和:2433

約数の個数: 24

約数和(自身を含む): 26745768

約数和(自身を除く): 7924823

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2393, 7865, 11965, 26323, 31109, 131615, 155545, 289553, 342199, 1447765, 1710995, 3764189, 18820945]

約数ペア:

[(1, 18820945), (5, 3764189), (11, 1710995), (13, 1447765), (55, 342199), (65, 289553), (121, 155545), (143, 131615), (605, 31109), (715, 26323), (1573, 11965), (2393, 7865)]