816520

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 1863000

約数和(自身を除く): 1046480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 149, 274, 298, 548, 596, 685, 745, 1096, 1192, 1370, 1490, 2740, 2980, 5480, 5960, 20413, 40826, 81652, 102065, 163304, 204130, 408260, 816520]

約数ペア:

[(1, 816520), (2, 408260), (4, 204130), (5, 163304), (8, 102065), (10, 81652), (20, 40826), (40, 20413), (137, 5960), (149, 5480), (274, 2980), (298, 2740), (548, 1490), (596, 1370), (685, 1192), (745, 1096)]