800080

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 1899432

約数和(自身を除く): 1099352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 137, 146, 274, 292, 365, 548, 584, 685, 730, 1096, 1168, 1370, 1460, 2192, 2740, 2920, 5480, 5840, 10001, 10960, 20002, 40004, 50005, 80008, 100010, 160016, 200020, 400040, 800080]

約数ペア:

[(1, 800080), (2, 400040), (4, 200020), (5, 160016), (8, 100010), (10, 80008), (16, 50005), (20, 40004), (40, 20002), (73, 10960), (80, 10001), (137, 5840), (146, 5480), (274, 2920), (292, 2740), (365, 2192), (548, 1460), (584, 1370), (685, 1168), (730, 1096)]