778160

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 40

約数和(自身を含む): 1848096

約数和(自身を除く): 1069936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 137, 142, 274, 284, 355, 548, 568, 685, 710, 1096, 1136, 1370, 1420, 2192, 2740, 2840, 5480, 5680, 9727, 10960, 19454, 38908, 48635, 77816, 97270, 155632, 194540, 389080, 778160]

約数ペア:

[(1, 778160), (2, 389080), (4, 194540), (5, 155632), (8, 97270), (10, 77816), (16, 48635), (20, 38908), (40, 19454), (71, 10960), (80, 9727), (137, 5680), (142, 5480), (274, 2840), (284, 2740), (355, 2192), (548, 1420), (568, 1370), (685, 1136), (710, 1096)]