401536790

素因数分解:

$2^1\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{20107}}^1$

素因数の和:22111

約数の個数: 16

約数和(自身を含む): 723164112

約数和(自身を除く): 321627322

約数列:

[1, 2, 5, 10, 1997, 3994, 9985, 19970, 20107, 40214, 100535, 201070, 40153679, 80307358, 200768395, 401536790]

約数ペア:

[(1, 401536790), (2, 200768395), (5, 80307358), (10, 40153679), (1997, 201070), (3994, 100535), (9985, 40214), (19970, 20107)]