201901990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{284369}}^1$

素因数の和:284447

約数の個数: 16

約数和(自身を含む): 368543520

約数和(自身を除く): 166641530

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 284369, 568738, 1421845, 2843690, 20190199, 40380398, 100950995, 201901990]

約数ペア:

[(1, 201901990), (2, 100950995), (5, 40380398), (10, 20190199), (71, 2843690), (142, 1421845), (355, 568738), (710, 284369)]