139607720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{498599}}^1$

素因数の和:498617

約数の個数: 32

約数和(自身を含む): 358992000

約数和(自身を除く): 219384280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 498599, 997198, 1994396, 2492995, 3490193, 3988792, 4985990, 6980386, 9971980, 13960772, 17450965, 19943960, 27921544, 34901930, 69803860, 139607720]

約数ペア:

[(1, 139607720), (2, 69803860), (4, 34901930), (5, 27921544), (7, 19943960), (8, 17450965), (10, 13960772), (14, 9971980), (20, 6980386), (28, 4985990), (35, 3988792), (40, 3490193), (56, 2492995), (70, 1994396), (140, 997198), (280, 498599)]