21535281

素因数分解:

$3^3\times {\mathrm{509}}^1\times {\mathrm{1567}}^1$

素因数の和:2085

約数の個数: 16

約数和(自身を含む): 31987200

約数和(自身を除く): 10451919

約数列:

[1, 3, 9, 27, 509, 1527, 1567, 4581, 4701, 13743, 14103, 42309, 797603, 2392809, 7178427, 21535281]

約数ペア:

[(1, 21535281), (3, 7178427), (9, 2392809), (27, 797603), (509, 42309), (1527, 14103), (1567, 13743), (4581, 4701)]