8377900

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:634

約数の個数: 36

約数和(自身を含む): 18314800

約数和(自身を除く): 9936900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 421, 796, 842, 995, 1684, 1990, 2105, 3980, 4210, 4975, 8420, 9950, 10525, 19900, 21050, 42100, 83779, 167558, 335116, 418895, 837790, 1675580, 2094475, 4188950, 8377900]

約数ペア:

[(1, 8377900), (2, 4188950), (4, 2094475), (5, 1675580), (10, 837790), (20, 418895), (25, 335116), (50, 167558), (100, 83779), (199, 42100), (398, 21050), (421, 19900), (796, 10525), (842, 9950), (995, 8420), (1684, 4975), (1990, 4210), (2105, 3980)]