20645612

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3931}}^1$

素因数の和:4049

約数の個数: 24

約数和(自身を含む): 39304272

約数和(自身を除く): 18658660

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 3931, 5252, 7862, 15724, 51103, 102206, 204412, 397031, 794062, 1588124, 5161403, 10322806, 20645612]

約数ペア:

[(1, 20645612), (2, 10322806), (4, 5161403), (13, 1588124), (26, 794062), (52, 397031), (101, 204412), (202, 102206), (404, 51103), (1313, 15724), (2626, 7862), (3931, 5252)]