20689964

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{167}}^1\times {\mathrm{659}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 37255680

約数和(自身を除く): 16565716

約数列:

[1, 2, 4, 47, 94, 167, 188, 334, 659, 668, 1318, 2636, 7849, 15698, 30973, 31396, 61946, 110053, 123892, 220106, 440212, 5172491, 10344982, 20689964]

約数ペア:

[(1, 20689964), (2, 10344982), (4, 5172491), (47, 440212), (94, 220106), (167, 123892), (188, 110053), (334, 61946), (659, 31396), (668, 30973), (1318, 15698), (2636, 7849)]