21724820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83557}}^1$

素因数の和:83579

約数の個数: 24

約数和(自身を含む): 49132104

約数和(自身を除く): 27407284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83557, 167114, 334228, 417785, 835570, 1086241, 1671140, 2172482, 4344964, 5431205, 10862410, 21724820]

約数ペア:

[(1, 21724820), (2, 10862410), (4, 5431205), (5, 4344964), (10, 2172482), (13, 1671140), (20, 1086241), (26, 835570), (52, 417785), (65, 334228), (130, 167114), (260, 83557)]