8407240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2081}}^1$

素因数の和:2193

約数の個数: 32

約数和(自身を含む): 19112760

約数和(自身を除く): 10705520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 2081, 4040, 4162, 8324, 10405, 16648, 20810, 41620, 83240, 210181, 420362, 840724, 1050905, 1681448, 2101810, 4203620, 8407240]

約数ペア:

[(1, 8407240), (2, 4203620), (4, 2101810), (5, 1681448), (8, 1050905), (10, 840724), (20, 420362), (40, 210181), (101, 83240), (202, 41620), (404, 20810), (505, 16648), (808, 10405), (1010, 8324), (2020, 4162), (2081, 4040)]