21636855

素因数分解:

$3^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1931}}^1$

素因数の和:2028

約数の個数: 32

約数和(自身を含む): 38949120

約数和(自身を除く): 17312265

約数列:

[1, 3, 5, 9, 15, 27, 45, 83, 135, 249, 415, 747, 1245, 1931, 2241, 3735, 5793, 9655, 11205, 17379, 28965, 52137, 86895, 160273, 260685, 480819, 801365, 1442457, 2404095, 4327371, 7212285, 21636855]

約数ペア:

[(1, 21636855), (3, 7212285), (5, 4327371), (9, 2404095), (15, 1442457), (27, 801365), (45, 480819), (83, 260685), (135, 160273), (249, 86895), (415, 52137), (747, 28965), (1245, 17379), (1931, 11205), (2241, 9655), (3735, 5793)]