164058520

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{15959}}^1$

素因数の和:16227

約数の個数: 32

約数和(自身を含む): 370591200

約数和(自身を除く): 206532680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 15959, 31918, 63836, 79795, 127672, 159590, 319180, 638360, 4101463, 8202926, 16405852, 20507315, 32811704, 41014630, 82029260, 164058520]

約数ペア:

[(1, 164058520), (2, 82029260), (4, 41014630), (5, 32811704), (8, 20507315), (10, 16405852), (20, 8202926), (40, 4101463), (257, 638360), (514, 319180), (1028, 159590), (1285, 127672), (2056, 79795), (2570, 63836), (5140, 31918), (10280, 15959)]