28695560

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1789}}^1$

素因数の和:2201

約数の個数: 32

約数和(自身を含む): 64762200

約数和(自身を除く): 36066640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 1789, 2005, 3208, 3578, 4010, 7156, 8020, 8945, 14312, 16040, 17890, 35780, 71560, 717389, 1434778, 2869556, 3586945, 5739112, 7173890, 14347780, 28695560]

約数ペア:

[(1, 28695560), (2, 14347780), (4, 7173890), (5, 5739112), (8, 3586945), (10, 2869556), (20, 1434778), (40, 717389), (401, 71560), (802, 35780), (1604, 17890), (1789, 16040), (2005, 14312), (3208, 8945), (3578, 8020), (4010, 7156)]