205167920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{82729}}^1$

素因数の和:82773

約数の個数: 40

約数和(自身を含む): 492408960

約数和(自身を除く): 287241040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 82729, 165458, 330916, 413645, 661832, 827290, 1323664, 1654580, 2564599, 3309160, 5129198, 6618320, 10258396, 12822995, 20516792, 25645990, 41033584, 51291980, 102583960, 205167920]

約数ペア:

[(1, 205167920), (2, 102583960), (4, 51291980), (5, 41033584), (8, 25645990), (10, 20516792), (16, 12822995), (20, 10258396), (31, 6618320), (40, 5129198), (62, 3309160), (80, 2564599), (124, 1654580), (155, 1323664), (248, 827290), (310, 661832), (496, 413645), (620, 330916), (1240, 165458), (2480, 82729)]