201871880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{720971}}^1$

素因数の和:720989

約数の個数: 32

約数和(自身を含む): 519099840

約数和(自身を除く): 317227960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 720971, 1441942, 2883884, 3604855, 5046797, 5767768, 7209710, 10093594, 14419420, 20187188, 25233985, 28838840, 40374376, 50467970, 100935940, 201871880]

約数ペア:

[(1, 201871880), (2, 100935940), (4, 50467970), (5, 40374376), (7, 28838840), (8, 25233985), (10, 20187188), (14, 14419420), (20, 10093594), (28, 7209710), (35, 5767768), (40, 5046797), (56, 3604855), (70, 2883884), (140, 1441942), (280, 720971)]