21053667

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7789}}^1$

素因数の和:7862

約数の個数: 16

約数和(自身を含む): 30287520

約数和(自身を除く): 9233853

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7789, 23367, 132413, 397239, 412817, 1238451, 7017889, 21053667]

約数ペア:

[(1, 21053667), (3, 7017889), (17, 1238451), (51, 412817), (53, 397239), (159, 132413), (901, 23367), (2703, 7789)]