16665560

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1039}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 37627200

約数和(自身を除く): 20961640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1039, 1604, 2005, 2078, 3208, 4010, 4156, 5195, 8020, 8312, 10390, 16040, 20780, 41560, 416639, 833278, 1666556, 2083195, 3333112, 4166390, 8332780, 16665560]

約数ペア:

[(1, 16665560), (2, 8332780), (4, 4166390), (5, 3333112), (8, 2083195), (10, 1666556), (20, 833278), (40, 416639), (401, 41560), (802, 20780), (1039, 16040), (1604, 10390), (2005, 8312), (2078, 8020), (3208, 5195), (4010, 4156)]