20664570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{839}}^1$

素因数の和:1670

約数の個数: 32

約数和(自身を含む): 49714560

約数和(自身を除く): 29049990

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 821, 839, 1642, 1678, 2463, 2517, 4105, 4195, 4926, 5034, 8210, 8390, 12315, 12585, 24630, 25170, 688819, 1377638, 2066457, 3444095, 4132914, 6888190, 10332285, 20664570]

約数ペア:

[(1, 20664570), (2, 10332285), (3, 6888190), (5, 4132914), (6, 3444095), (10, 2066457), (15, 1377638), (30, 688819), (821, 25170), (839, 24630), (1642, 12585), (1678, 12315), (2463, 8390), (2517, 8210), (4105, 5034), (4195, 4926)]