20078991

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4049}}^1$

素因数の和:4103

約数の個数: 24

約数和(自身を含む): 31590000

約数和(自身を除く): 11511009

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4049, 4959, 12147, 36441, 76931, 117421, 230793, 352263, 692379, 1056789, 2230999, 6692997, 20078991]

約数ペア:

[(1, 20078991), (3, 6692997), (9, 2230999), (19, 1056789), (29, 692379), (57, 352263), (87, 230793), (171, 117421), (261, 76931), (551, 36441), (1653, 12147), (4049, 4959)]