1991920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3557}}^1$

素因数の和:3577

約数の個数: 40

約数和(自身を含む): 5294304

約数和(自身を除く): 3302384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3557, 7114, 14228, 17785, 24899, 28456, 35570, 49798, 56912, 71140, 99596, 124495, 142280, 199192, 248990, 284560, 398384, 497980, 995960, 1991920]

約数ペア:

[(1, 1991920), (2, 995960), (4, 497980), (5, 398384), (7, 284560), (8, 248990), (10, 199192), (14, 142280), (16, 124495), (20, 99596), (28, 71140), (35, 56912), (40, 49798), (56, 35570), (70, 28456), (80, 24899), (112, 17785), (140, 14228), (280, 7114), (560, 3557)]