20178077170

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28419827}}^1$

素因数の和:28419905

約数の個数: 16

約数和(自身を含む): 36832097088

約数和(自身を除く): 16654019918

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28419827, 56839654, 142099135, 284198270, 2017807717, 4035615434, 10089038585, 20178077170]

約数ペア:

[(1, 20178077170), (2, 10089038585), (5, 4035615434), (10, 2017807717), (71, 284198270), (142, 142099135), (355, 56839654), (710, 28419827)]