20028951

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 31671024

約数和(自身を除く): 11642073

約数列:

[1, 3, 9, 27, 37, 41, 81, 111, 123, 163, 333, 369, 489, 999, 1107, 1467, 1517, 2997, 3321, 4401, 4551, 6031, 6683, 13203, 13653, 18093, 20049, 40959, 54279, 60147, 122877, 162837, 180441, 247271, 488511, 541323, 741813, 2225439, 6676317, 20028951]

約数ペア:

[(1, 20028951), (3, 6676317), (9, 2225439), (27, 741813), (37, 541323), (41, 488511), (81, 247271), (111, 180441), (123, 162837), (163, 122877), (333, 60147), (369, 54279), (489, 40959), (999, 20049), (1107, 18093), (1467, 13653), (1517, 13203), (2997, 6683), (3321, 6031), (4401, 4551)]