20408726

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25321}}^1$

素因数の和:25367

約数の個数: 16

約数和(自身を含む): 34032768

約数和(自身を除く): 13624042

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 25321, 50642, 329173, 658346, 784951, 1569902, 10204363, 20408726]

約数ペア:

[(1, 20408726), (2, 10204363), (13, 1569902), (26, 784951), (31, 658346), (62, 329173), (403, 50642), (806, 25321)]