18902378

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{4111}}^1$

素因数の和:4154

約数の個数: 24

約数和(自身を含む): 32813760

約数和(自身を除く): 13911382

約数列:

[1, 2, 11, 19, 22, 38, 121, 209, 242, 418, 2299, 4111, 4598, 8222, 45221, 78109, 90442, 156218, 497431, 859199, 994862, 1718398, 9451189, 18902378]

約数ペア:

[(1, 18902378), (2, 9451189), (11, 1718398), (19, 994862), (22, 859199), (38, 497431), (121, 156218), (209, 90442), (242, 78109), (418, 45221), (2299, 8222), (4111, 4598)]