87888920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{313889}}^1$

素因数の和:313907

約数の個数: 32

約数和(自身を含む): 226000800

約数和(自身を除く): 138111880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 313889, 627778, 1255556, 1569445, 2197223, 2511112, 3138890, 4394446, 6277780, 8788892, 10986115, 12555560, 17577784, 21972230, 43944460, 87888920]

約数ペア:

[(1, 87888920), (2, 43944460), (4, 21972230), (5, 17577784), (7, 12555560), (8, 10986115), (10, 8788892), (14, 6277780), (20, 4394446), (28, 3138890), (35, 2511112), (40, 2197223), (56, 1569445), (70, 1255556), (140, 627778), (280, 313889)]