15998900

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1151}}^1$

素因数の和:1304

約数の個数: 36

約数和(自身を含む): 34997760

約数和(自身を除く): 18998860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1151, 1390, 2302, 2780, 3475, 4604, 5755, 6950, 11510, 13900, 23020, 28775, 57550, 115100, 159989, 319978, 639956, 799945, 1599890, 3199780, 3999725, 7999450, 15998900]

約数ペア:

[(1, 15998900), (2, 7999450), (4, 3999725), (5, 3199780), (10, 1599890), (20, 799945), (25, 639956), (50, 319978), (100, 159989), (139, 115100), (278, 57550), (556, 28775), (695, 23020), (1151, 13900), (1390, 11510), (2302, 6950), (2780, 5755), (3475, 4604)]