16390280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4057}}^1$

素因数の和:4169

約数の個数: 32

約数和(自身を含む): 37252440

約数和(自身を除く): 20862160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4057, 8114, 16228, 20285, 32456, 40570, 81140, 162280, 409757, 819514, 1639028, 2048785, 3278056, 4097570, 8195140, 16390280]

約数ペア:

[(1, 16390280), (2, 8195140), (4, 4097570), (5, 3278056), (8, 2048785), (10, 1639028), (20, 819514), (40, 409757), (101, 162280), (202, 81140), (404, 40570), (505, 32456), (808, 20285), (1010, 16228), (2020, 8114), (4040, 4057)]