20649609

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{523}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 30899232

約数和(自身を除く): 10249623

約数列:

[1, 3, 9, 41, 107, 123, 321, 369, 523, 963, 1569, 4387, 4707, 13161, 21443, 39483, 55961, 64329, 167883, 192987, 503649, 2294401, 6883203, 20649609]

約数ペア:

[(1, 20649609), (3, 6883203), (9, 2294401), (41, 503649), (107, 192987), (123, 167883), (321, 64329), (369, 55961), (523, 39483), (963, 21443), (1569, 13161), (4387, 4707)]