20438210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157217}}^1$

素因数の和:157237

約数の個数: 16

約数和(自身を含む): 39618936

約数和(自身を除く): 19180726

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157217, 314434, 786085, 1572170, 2043821, 4087642, 10219105, 20438210]

約数ペア:

[(1, 20438210), (2, 10219105), (5, 4087642), (10, 2043821), (13, 1572170), (26, 786085), (65, 314434), (130, 157217)]