2787020

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{421}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 5884368

約数和(自身を除く): 3097348

約数列:

[1, 2, 4, 5, 10, 20, 331, 421, 662, 842, 1324, 1655, 1684, 2105, 3310, 4210, 6620, 8420, 139351, 278702, 557404, 696755, 1393510, 2787020]

約数ペア:

[(1, 2787020), (2, 1393510), (4, 696755), (5, 557404), (10, 278702), (20, 139351), (331, 8420), (421, 6620), (662, 4210), (842, 3310), (1324, 2105), (1655, 1684)]