389080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 894240

約数和(自身を除く): 505160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 274, 284, 355, 548, 568, 685, 710, 1096, 1370, 1420, 2740, 2840, 5480, 9727, 19454, 38908, 48635, 77816, 97270, 194540, 389080]

約数ペア:

[(1, 389080), (2, 194540), (4, 97270), (5, 77816), (8, 48635), (10, 38908), (20, 19454), (40, 9727), (71, 5480), (137, 2840), (142, 2740), (274, 1420), (284, 1370), (355, 1096), (548, 710), (568, 685)]