20481651

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{509}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 11024109

約数列:

[1, 3, 9, 17, 51, 153, 263, 509, 789, 1527, 2367, 4471, 4581, 8653, 13413, 25959, 40239, 77877, 133867, 401601, 1204803, 2275739, 6827217, 20481651]

約数ペア:

[(1, 20481651), (3, 6827217), (9, 2275739), (17, 1204803), (51, 401601), (153, 133867), (263, 77877), (509, 40239), (789, 25959), (1527, 13413), (2367, 8653), (4471, 4581)]