201720940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{142057}}^1$

素因数の和:142137

約数の個数: 24

約数和(自身を含む): 429583392

約数和(自身を除く): 227862452

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 142057, 284114, 568228, 710285, 1420570, 2841140, 10086047, 20172094, 40344188, 50430235, 100860470, 201720940]

約数ペア:

[(1, 201720940), (2, 100860470), (4, 50430235), (5, 40344188), (10, 20172094), (20, 10086047), (71, 2841140), (142, 1420570), (284, 710285), (355, 568228), (710, 284114), (1420, 142057)]