20590405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 28885248

約数和(自身を除く): 8294843

約数列:

[1, 5, 11, 23, 41, 55, 115, 205, 253, 397, 451, 943, 1265, 1985, 2255, 4367, 4715, 9131, 10373, 16277, 21835, 45655, 51865, 81385, 100441, 179047, 374371, 502205, 895235, 1871855, 4118081, 20590405]

約数ペア:

[(1, 20590405), (5, 4118081), (11, 1871855), (23, 895235), (41, 502205), (55, 374371), (115, 179047), (205, 100441), (253, 81385), (397, 51865), (451, 45655), (943, 21835), (1265, 16277), (1985, 10373), (2255, 9131), (4367, 4715)]